Glad you found us Raymond! Appreciate you watching and sharing your enthusiasm for our process. If you would like to learn more about our products or services do not hesitate to reach out to us at info@locknstitch.com
Not only is this an extremely well done video, but your media relations is amazing. I have never seen a company that replies 12 years after they post something!
@@jackmehoff2363Your comment deserves way more recognition and like a free oversized T-shirt from lock stitch to sleep in while listening to this. 😂😂 “accidental asmr”😂🎉
@@LOCKNSTITCHhey question if you are still here. I have a 1/2 “ crack in a Cleveland block, In upper galley. Where can I get the stuff to do this??? Any advice or help would be appreciated .
In the 80's I worked in the office of partners in a welding company that were working on getting the patent on this system. I typed up the description for the process. The boss would tell people that I could probably do the process as well as the guys in the shop because I knew and understood the system as well as any of them. The idea behind this goes back to the 1700's. But had many flaws that caused failure.The designer went through and solved each one. I saw this used on boat motors that cracked when they weren't properly winterized. They ran as good as new. The locks that run across the stitching pull the crack together in such a way to keep the crack from opening up while the pins replace the cracked material. The locks used in the past would often push the crack open wider and not pull it closed. That really helps to make this system work. The repairs last, they repaired engine blocks and heads to the huge military trucks then would run them for 100s of hours or more without a failure. The man who created and taught me how and why it worked and had me type up descriptions on the process was creative and knew and understood metals. Unfortunately he lacked the vision to understand how to profit from his creation and not lose what he had. Creativity may not walk with wisdom.
Note that this procedure only works for compression cracks, where the surrounding metal jams against the stitch bolt. It DOES NOT fix tension cracks! (where the crack is being pulled apart by stress) In that case, stress on the part would pull the crack open more releasing the force on the stitch bolt. Sometimes welding or brazing is the only way. :(
This type of repair has hooks on threads that draws in the crack in the casting that is being repaired. Unlike the method used by irontite product which I've used both methods. Irontite tends to spread apart the repair if you are not aware that this happening. I've had great success in both methods with no failures. Used to charge $100 an inch don't what the price is now
@@ericbruck7958 100% correct - unlike tapered plugs, our patented stitching pins and thread repair inserts pull the surrounding material together adding strength and creating a permanent repair!
My father is a welder/fabricator. He described this process to me but I had never seen it done. I appreciate being able to see it in a nicely described and well lit video! Thank you for sharing this!
Absolutely love this company!! A mechanic (friend of mine) accidentally drilled through the water jacket , while attempting to remove a broken bolt in my engine block on my Camaro. (A power steering pump mounting bolt had come loose, snapping the other bolt clean off below the mounting surface) The great idea to drill it out turned sour the minute I saw coolant coming out of the hole. He apologized and took off. After several calls it seemed hopeless. Nobody knew how to fix the hole in my engine. I worked all night on a custom plug to fit tightly in the hole, with the proper size bolt on the other end. I planned to spot weld it in until I was told it wouldn't work.... So I typed "weld on engine block" into the google search bar and found Mike. He told me about Full Torque and I purchased a kit with drill bit, a tap with special threads and matching insert with a locking pin and glue. It was so simple, I did it myself. I cannot say enough about this ingenious product that came to my rescue. PS This happened over 10 yrs ago and my 2000 Camaro hasn't leaked a drop of coolant and runs like a champ. In short: LOCK-N-STITCH is BOSS!
This is GREAT! We are thrilled to read your testimonial about LNS (sorry for the delayed response, TH-cam filtered your comment out for approval in error) We would certainly approve a comment with such high praise, The more people know the more they are amazed at what can be done in the world of casting repair with the LNS products. We appreciate your support and again for the wonderful comment. Would love to see any pictures you might have so that we could share this story on FB - testimonials are the best! Glad to hear the Camaro is still running strong!!
Years ago I heard my father refer to this method of fixing cracks in engine blocks while at sea as a merchant marine. Very cool to see it used, what a great video!
You are right the method of 'pinning' cracks has been around for a long time. The art of metal stitching has improved on the older techniques and the LOCK-N-STITCH patented thread design has the capability to repair castings like never before! Thank you for watching! www.locknstitch.com
I have seen metal stitching done on detroit diesels engines in motor scrapers. A very successful repair, saving on engine block or head replacements costs .
@@jonathangarzon2798 here is a white paper written by Gary Reed the inventor of our patented products and services that will go into your question in depth - it is all in how cast iron responds to heat that makes welding so difficult www.locknstitch.com/pdf/gmrc_white_paper.pdf
This is great to watch. Oddly satisfying. When I struggle to get my crap drill to go through a bit of aluminium seeing your kit just eat away at the metal like a knife through butter was so good to see. Great work. Thanks guys.
Thanks Chris! We are passionate about what we do and love repairing what most say is unrepairable! If you ever want to learn more about our products or services feel free to reach out to us. info@locknstitch.com
It’s a training video so it’s valuable skills :P usually you have to pay to see these kinds of things...would be awesome if the entire training course was on TH-cam lol of course you’ll get the skills and know how but it won’t give you the paper work and certificate lol
@@drahunter213 Yes of course we can't put the entire training course online, but we do have more info we can share with you if you send in a request to customer service for an Info Pack - we really appreciate you watching and if you have any questions in the future our team is always happy to talk to you info@locknstitch.com or 209/632-2345
@@murderdoggg Absolutely it will. This process has been used on countless numbers of engine blocks. If you have a specific repair need or needs in mind that you would like to get product for or a quote for repair please reach out to our customer service team. Pictures always help the technical support team if you have something currently you need to repair. info@locknstitch.com 209/632-2345
What a great idea! You've relieved the stresses in the metal that caused the crack in the first place, then put metal back in to keep it from flexing any more. Well done!
I first saw this done in the early 1960's on an old flat head Ford V8 engine. The very experienced mechanic used 6013 welding rod with flux removed. Simply drilled a hole, tapped the hole for 1/8 inch rod. Threaded the rod then twisted the rod into the threaded hole. Then cut the rod off flush filed smooth. repeated the process overlapping the threaded welding rod by half until the entire crack had been laced closed. The engine was still in service many years later.
I learned about Stiching back in the 80s in Italy, to save no longer available parts. At the UIM Key West Offshore Race, we Stiched an External Aluminum gas tank, between the sponsons.
Me too, glad it did though. You gotta watch parts 2 & 3. Brilliant repair technique. Wish I would’ve known about it back in 2012 when I chucked out a bandsaw due to a big crack in the cast iron frame.
@@voodoochild8697 amazing to get this feedback! If you have any pictures we would love to share your success story in our social media channels. Thank you for being the best part of LNS - a valued customer.
Great video! I learned of this process years ago working in a diesel engine fired power generating plant. I have tried to describe the process several times over the years and now having this video to refer to, will make it much easier. Thank you!
Thanks Robert and you can also refer people to the website www.locknstitch.com there are some great examples of repairs there as well! Appreciate you watching and commenting.
I am impressed by this technique. It makes a lot of sense, since welding can and most likely WILL introduce internal stress to the casting. However this technique alleviates those stresses and completely repairs the crack all the way through.
You get it completely! This process pulls the metal together, adds strength. No heat involved, no additional cracking or stress! Thanks for watching and for commenting!
So glad you found us Ricky! If you have any additional questions or have a specific repair you are working on our team would be happy to help you. Feel free to reach out to info@locknstitch.com or by phone at 800/736-8261 or 209/632-2345
@@bitterbaldguy As I understand it, welding cast iron can induce stresses that can cause the casting to fail at a later time. This process relieves stresses.
@@xenaguy01 just sharing some info here: theyve come out with a product called muggy weld just for welding cast. it stays somewhat flexible. if its not available then nickel alloy works well too. you can avoid pre heating cast but still do short sections(3/4") at a time and pein the heck out of it.
Hi Wally - thanks for watching and commenting. At LNS we have been in the casting repair, metal stitching business for over 30 years - manufacturing our patented stitching pins and using our technology all over the world saving irreplaceable castings! If you would like to learn more, or purchase the products please reach out to our customer service team. They would be happy to help you info@locknstitch.com
This method has been used for years and is one of the best ways to repair a crack on a cast iron surface, I've used it many times and never had any problems .
John that is great to hear! Thanks for commenting and we wish you continued success with our products! If you need technical support or additional products/services do not hesitate to reach out to us. 800/736-8261 or 209/632-2345 info@locknstitch.com
There are not a lot of this cast iron cylinder heads still produced but we still do this repair on quite a few vortec 350/4.3, Dodge 318/360 Magnum and Ford 3.0 heads. I repaired about a half dozen 350 heads last week just like this.
Brian I am so glad to hear you are having such success with the products! We are always here for your casting repair needs. Let us know if you need us for help with any projects, big or small are team is here for you.
Back in 2016 I was looking for this vid I typed engine crack fix Never saw your vid Lo n behold 6 years later... I subbed and liked the video Thank you kind , Sir.
This company saved my butt and my job way back in 2002. I messed up the layout for 2 knockout holes in the platen of a brand new 1000-ton injection molding machine and bored the holes wrong. These were about 2 1/2" in diameter and were half a hole off. We flew their tech down to Carlsbad, and he stitched in some plugs so that we could re-bore the holes in the right place. Still running ten years later.
Myron thanks for commenting and so glad to know that you have not had any issues and everything is still running! If you ever need us again, products or services we are here for you!
Thanks for watching and your comments. If you ever run across a need to repair any casting again, give us a call! We are always here to help. 800/736-8261 or 209/632-2345 info@locknstitch.com Happy New Year!
The guy hand drilling those holes makes it look easy. It’s so easy to get off and drill crooked when your having to apply force when drilling into hard material
Metal stitching has been around for a long time, and I've seen it on machinery and people talked to me about it. This video is the first I've ever seen it done. It fills and stabilizes the crack, but adds no strength. Threads are an inclined plane which generates forces both vertically and horizontally, which tends to widen the crack slightly, which would also preload the threads thereby keeping the joint tight over time. The way the pin is made would stabilize the crack vertically as well. A lot of castings are not that thick, but some machinery castings are. It could be machined flat with the surrounding metal and present a sealing surface with no perceptible imperfections and involve no heat. The only thing I would say is when you see him free-handing the first hole between the holes at 6:50 is, "don't try this at home" without some sort of jig. Also, the metal sure seems to drill nice in the advertisement. I never thought to repair a crack on a sealing surface, so I'll remember stitching as an option. It is also low risk. However, stitching cannot fix something that is broken and adds no strength. If anyone wants to argue that stitching does, they shouldn't mind if we saw around the crack. The pieces will fall apart in your hands, and you will never get it back together like it was without the compressive force of the surrounding casting. For more than filling a crack, IME the cast iron rod was hard to work with and simply produced a weak zone of embrittlement. Brazing adds a lot of heat which causes warping stresses of its own and not a particularly strong bond. You can end up chasing cracks and preheat can warp things. For most things I"ll continue with cleaner and dye penetrant to find the ends of all of the cracks, stop-drill, a little v-grind, weld with nickel rod, and check again for cracks. This method has been the easiest, fastest, by far the strongest, and seems to mitigate the embrittlement at the joint. I have never had any kind of issue with this method, structurally, warpage, or leaks. Nickle is also not that hard, so it's easy to work if you need to. Thanks for the video!
Is that with a good pre and post heat using the nickel electrodes? I've been chasing cracks in a piece now. I've tried 7018, albronze stick electrodes and I tried some stainless steel rods that would just blow holes. I'll probably end up cutting a section out for some mild steel at this rate. Good practice though. I think my problem is the pre and post heating but I don't have an oxy acetylene set unfortunately
@@PercyJackson93 I've never preheated with the nickle rod and I never had cracks run on me but I did drill just past the end of the crack. I V grind a little. I've had lousy luck with anything but nickle.
Watching this brings back memories of going to work with my dad in the school holidays. He worked for a company called Metalock, he worked for them for 40 years, from just after WW2 until his retirement in 1987. The range of applications for this process are almost limitless, and cover every industry. I understand it was Metalock who first patented the process in the Texas oilfields in the 1940s....
I saw this method employed on an engine block. A Cooper Bessemer engine in a 1947 Porter locomotive. I didn't see the process, but now I understand it more completely. Thanks for a great video.
Thank you William for watching and so glad you found us. If you would like to get more information or reach us for products or services do not hesitate to reach out to us info@locknstitch.com
I like the jig for getting perfect results here.. I always eyeball and I also overlap each pin (meaning on a 1/4 inch pin I would start my next hole 3/16 over.. Stitched up many cast cracks with this method and it worked flawlessly.. No sending heavy flat head blocks off to come back with more cracks. Fix it right the first time is my motto. Great product.
It’s nice looking, and I hope works. I had an engine over 100 years old that had this done but still seeping. Had it cast iron welded, looking great and no leaks. Took 6 hrs to heat the 11” bore by 36” cyl. And then about 8 hrs of welding time.
Hi Gail - if you still have 'seeping' we can help. Please reach out to our customer service team, if you send pictures of the leak that still remains we could provide a solution for you. Thank you for watching and commenting - we are here to help you at any time! info@locknstitch.com
I’ve seen this technique a few times. It’s great for saving old components that are not readily available today. It’s sad that it’s so rare now, but it indicates how disposable things are today.
Paul that is wonderful that you have such skill and knowledge in metal working! Now you even know about us too! If you ever would like to learn more feel free to contact us directly. Our technicians would be happy to talk to you on the phone or send you more information. 800/736-8261 or 206/632-2345 or info@locknstitch.com
In 1969 I worked for a Detroit based company that did this type of repair. It called the process metal lock and I never saw a repair fail. This saved companies lots of money compared to buying replacement parts. Dirty work!
I know nothing about this kind of stuff. But, I can see a skilled professional at work and you sir, are a skilled professional. Was beautiful to watch this work.
I did this 30 years ago in a London UK engineering company rebilding engines and machine work. When it closed in 1996 us last five were made redundant. We were the last in London . And I still miss it . Thanks for the memory .....
This is just a portion of a training series, please feel free to contact our customer sales team if you would like to learn more about our products and services! 800/736-8261 209/632-2345 info@locknstitch.com Thank you for watching and for your interest!
At last ! Phew thanks - I am aware of the process but didn't fully appreciate what EXACTLY was being done - that was simple and clear - no stitch welding after all! a bit like French Pinning which I use on drive shaft couplings. Oh it's the way we (don't) think! thanks for posting
Thanks for the great response! If you are ever in need of our products or services do not hesitate to reach out to us. 800/736-8261 *US Canada or 209/632-2345 or info@locknstitch.com
Recently metal stitched a #4 GE combustion turbine crankcase. The job cost the customer $45K. (A new crankcase was $4 million US). The turbine has been back in service for 3 years now. They are very happy.
Thank you Mark for sharing! We love hear how the process can get a customer back up and running, in turn saving $ by repairing instead of replacing the damaged casting!
ken cohagen He could have charged more. It's not about labor or materials cost, it's about the value. In many industries you can charge up to half the replacement cost to perform the repair. Think of it, if he had charged them $100k, it still would have saved them $3.9 million dollars for a replacement part. The value is therefore HUGE!
What an amazing product. Used it several times with zero comebacks. I now am a Professor at my local university teaching Diesel Mechanics Technology. We have a two year program that graduates our students with an A.A.S in DMT. We have a dedicated pre-req class for all incoming students called Basic Shop skills. We teach things such as: drilling/tapping, metal work/fab layout, sharpening drill bits, basic and then precision measurement with calipers dial bore gauges, micrometers, and the list goes on. I would LOVE to add a section on using your system to demonstrate its abilities and how to properly use it. The trick is getting the department chairs to agree to the cost so we usually have to demo things and then create a write up/pitch. If you’d ever be willing to work with me, maybe donate a demo kit I can use to show why we should routinely purchase more for incoming students to use LET ME KNOW. I think this would be a great section to add to my basic shop skills class. Just a thought…..either way, great product and God bless!
P.S. I stumbled on this video and it reminded me of your product and how it would be good to teach. Normally, I’d reach out in person, by phone, or email but this was unique. I don’t normally leave too many serious comments but I wanted to try while it was front and center. Thanks and take care.
Glad you found us! Feel free to call or email if you are in need of products or our repair services. www.locknstitch.com info@locknstitch.com 800/736-8261 209/632-2345 We are happy to give you technical support, answer any questions you may have, we ship products and perform repairs worldwide.
If you understand this process and how it works from an engineering standpoint, and, you understand the physical properties of cast iron, then you understand that this IS the BEST option for casting crack repair. This will LONG outlast your nickel weld technique every time. I have been using this for years. Go ahead and try welding on a un-replaceable antique one of a kind engine casting that there is only one of in the world and get back to me.
+Doug Ankrum your best option. I repaired a crack in between the valves on a 1959 KR cylinder years ago and it still holds today. 2 pins right through the seat area then machined right into the pins and installed hardened seats. There are only a coupke old timers I know who still do this. The company who makes lock and stitch used it to repair 20000 inches of cracks in the thick copper roof of our nations capitol building. Good stuff.
I've got a 6.5 Detroit diesel from a '98 Chevy I've been thinking of doing this on. As everyone knows, those six-fives are known for cracking. There's at least one company in the US that makes aftermarket blocks, but they're easily upwards of $3 grand each, excluding taxes and shipping. This would be much cheaper, and when you're talking about a cracked block, you've got nothing to loose anyways, so it's worth a try.
Thanks for watching and commenting. We are here for all the technical support you need to purchase products and do the repair (or find a local shop to do the repair) info@locknstitch.com or 800/736-8261 or 209/632-2345
This is a variation on a tried and true repair method that has been around since the dawn of the industrial revolution.Some if the ignorant commenters here need some actual experience, not internet folklore knowledge.Firstly, cast iron has very, very poor tensile strength, so welding will not be any stronger than this repair, and this repair is stronger in compression.Secondly, large cast iron parts like this are designed to carry very little load in tension, due to the nature of the material, there is no advantage in welding.Thirdly, welding a cast iron piece this large will cause crystallisation around the repaired area and will require a lot of prep time grinding the material to full depth to assure proper penetration, not to mention correct preheat and post cool down of the part, and warpage control whilst heating. There is absolutely zero advantage to TIG welding or any other method on cast iron, it's still going to crystallise around the weld and be weak.Fourthly, brazing would work well, but this is a very large part to preheat and takes the same amount of work to achieve the same result as welding, except it will work much better.This repair is just fine to permanently repair this part. Look up stitch repairing cast iron to see how it was done the old fashioned way- driving iron wedges into a part.
not always is possible to know which material you got in your hands, tig brazing does not require pre heat , I tig weld but I m 20 years in machining and repairs, already did all the shit possible.
Torch welding this would be a much better aproach. You can easily pre-heat the area before you do your welding, and you can sort-of anneal the area after words to prevent warping and hairline-spider cracks. I work for a guy up in Washington State and he does this almost on a daily basis.
I once took a head, from a 4 cylinder dodge, to a machine shop to be rebuilt. I sat the head on the floor and talked to machinist about what to do and cost, the first thing he said was we need to repair the cracks without even looking at it. I said what cracks he took a rag wiped around two of the valves and said these cracks.
I put over 100,000 mi. on an engine that had this type of repair done to the cylinder heads. It showed up under magnaflux at the machine shop,otherwise you couldn't tell.
Glad you found us Jay - if you want to learn more feel free to reach out to our customer service team. They would be happy to talk to you, answer any questions you have and send you more information. info@locknstitch.com
this video BLEW MY MIND! Great work and I feel anybody can do this... also, I watched at 2x speed and found I could learn just as much and save time this way
+arbyrobot thank you for the positive feedback! We are always here to help if you should ever have a need for our products or services 800/736-8261 info@locknstitch.com
FlatBroke612 sorry for the delayed reply, you can purchase direct from us 800/736-8261 or you can reach out to Canxus in Hanover ON 519/364-6051 - please do not hesitate to contact us if you have any questions or need any help info@locknstitch.com Thank you for your interest in our products and services.
I used to do this at my workplace of an engine re-manufacturers workshop. We didn't have the spacing jig but still managed the process. We had aluminium also.
Wonderful to hear! It has been great to work with Jay on the show and with his crew on a few other projects. Always wonderful to restore such fabulous pieces of history, have fun in the process, and teach others about the products and services as well. Thanks for watching and following up with us!
I've been called out often to weld cast iorn in the oilfields and never liked doing it, used nickel rods and sometimes LH 7018, i always tell them "I can't guarantee it'll hold but they had me do it anyway, I probably had around 45% success rate, doing what your doing is pure genius and I'll research this topic more, thanx for one hell of a video
Happy to excite you with our process Gene! We would love to talk to you more about our products if you wish to contact us directly. info@locknstitch.com or 800/736-8261 The customer service team is always here to help. Appreciate your comments and feedback!
Got to admit, when I first saw the jig used, thought "give me a break" as I continued watching, I realized how it worked. Don't be too quick to judge, is my motto.
Hello! Thanks for watching and commenting - the repair is a permanent repair! Please reach out to the team if you would like to get more information about our products and/or services. Happy New Year! info@locknstitch.com or 800/736-8261 or 209/632-2345
It's actually stronger than the cast metal so it should be rather permanent if done correctly. Much in the same way a time sert can be stronger than the original threads. This has been a proven repair method for a very long time for iron blocks. I suspect it works well with aluminum too. This kit looks very nice and definitely simplifies things.
If you want to check out strength you should watch this video we posted testing the strength of the C3 pin! Appreciate you wantching and commenting. If you ever have any questions please feel free to email or call us info@locknstitch.com 800/736-8261 209/632-2345 www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjxyO-K283XAhWrs1QKHfBvAyIQtwIIKzAA&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DtkCv8WpnqUo&usg=AOvVaw2V5ElVIS9yXsif74ipwTND
Thank you! Glad you found us, found the process and enjoyed learning more about what we do; the products we manufacture. We are passionate about casting repair and are here to help you if you ever need us.
Thank you for watching and commenting. We invite you to visit our website to learn more about 'why metal stitching' versus welding www.locknstitch.com/cast-iron-welding.html - if you also would like to have more information about our products or services please send a request to info@locknstitch.com
@@Oldwhiteguy That is GREAT! If you are ok with us sharing your story could you send any before and after pictures to info@locknstitch.com and with your permission we could put a post together on our FB page (we share it anonymously). It is always wonderful to hear from customers like you ~ thank you so much for sharing! Happy Riding!!
@@LOCKNSTITCH sorry but I don’t have any photos. It’s the inner primary and you can’t see. You can share the story np, my friend who repaired it( like you) is very skilled at his job.
I like this, even though I grew up welding and welding is what we did to repair broken/cracked cast iron. Didn't matter if it was a cylinder head mating surface or an exhaust manifold flange.
Hi George, thanks for watching and commenting! If you would ever like us to provide more information to you about our products or services do not hesitate to contact us. Our customer service team is also always available by phone if you have questions. info@locknstitch.com 80/736-8261 209/632-21345
@@RafaelHabegger Maybe explain why it looks counter-intuitive to you as it is clear that your intuition misleading you... crack can expand via sharp eadge that is cuting more and more of the material with that sharpe edge where forces are concentrated.
Thank you for the great video. I discovered a crack running through the stop pins top and bottom for the forward/reverse gears. The top crack is adjacent to the oil reservoir across from the allen haed plug for draining the oil. It will drain all of the oil over night. Your video will help me get it fixed. There is no way I could ever sell it with an issue like this. Again thanks
Right on! We love when people get just as excited as we do! We are here if you ever need more information or would like to purchase products to do repairs yourself! Our customer service staff and technicians would love to talk to you and answer any questions you may have. 800/736-8261 or 209/632-2345 or info@locknstitch.com Glad you found us
Back in the 1980's I found a set of automotive engineering books my dad had, dated 1950....it has instructions and pictures on how to do this exact repair...using ordinary bolts. Unfortunately now days things are not repaired as much as replaced...such a shame that some skills are lost in the workshop, but when you start working on motorcycle parts that are 40 years old and unobtainium, you need to repair as opposed to replace as there are no replacements available.
I would like to learn that also. I can see how a tougher metal would stiffen the surface and keep the two sides of the crack from racking past each other, which would keep the crack from spreading due to torqueing loads on the part. But do they withstand tensile loads?
From my understanding, the crack was drilled from end to end. Therefore, the crack no longer exists. All the material involved with the crack was drilled out and then replaced with pins threaded in with red loctite. The pins aren't fastening like a traditional bolt where 2 surfaces are sandwiched together but instead it's just used to fill the drilled hole. The long threads and thread sealant will seal and prevent any fluids leaking through. He's not actually "bolting" the 2 sides of the crack together.
Thanks! We are going to link the video. We are building a new TH-cam business channel; please stay tuned for new videos! Also if you are on Facebook, please like our page!
Im not selling anything. If its okay Id like to share my website, we feature video of Steve Jobs last project at apple, which is a large spaceship sized campus the size of the pentagon. So if your interested in Cars or technology like Mr Leno, Check it out. its applemothership D0t C0m and if its a problem just delete this video. I just thought id share it, I know now Mr leno You guys appreciate technology. Its going to run on solar power and energy fuel cells. And Il will like your page,
This is the most amazing crack repair system my two eyes have ever seen. I was quite happy to see you drill the Stop Hole at the opposite end of the crack. I work in a machine shop and we utilize Heli-coils on all aluminum castings. This is an amazing system. Where have I been to never have seen this before, lol. Must have been on Mars or something. Lol. I really enjoyed the education here.
Please check out the Full-Torque Permanent Thread Replacement Insert video on our channel. If you have worked with Heli-Coil we would hope you would appreciate our technology applied to inserts. Thanks for watching and so excited to know you are excited. We are passionate about casting repair! Also please feel free to review the web page dedicated to our FT Inserts castingrepair.locknstitch.com/category/full-torque-products
@@johnsmith-ce2tq they are made of various materials depending on the application; for aluminum repairs we do have the stitching pins in aluminum for cast iron repairs the stitching pins are made of steel. Thank you for writing from Australia and apologies due to the longer than normal time to reply. Please reach out to our customer service team at info@locknstitch.com if you would like more information. Thank you kindly for the question and your interests in our products! Happy New Year! castingrepair.locknstitch.com/category/metal-stitching-pins
Absolutely! If you are in need of our products or services we are here to help you anytime. Please do not hesitate to give us a call. We are located in California, but can ship products worldwide - can perform repairs worldwide. We also would be happy to give you technical support via email or over the phone. Thanks for watching and commenting! www.locknstitch.com 800/736-8261 or 209/632-2345
@ it is in the patented thread design, it pulls the metal together rather than push the material apart - adding strength to the repair. Please read more about it on this page of our website or you can always reach out to a technician to find out more 800/736-8261 or 209/632-2345 info@locknstitch.com castingrepair.locknstitch.com/item/c2f-stitching-pins/steel-castmaster--c2f-stitching-pins/c2fa-25#About%20C%20Series%20Stitching%20Pins
Similar techniques have been use for a long time. This looks a lot easier. I'm skeptical about the "thread design pulls it together" claim, but it shouldn't matter, just sales speak BS. It will work, and work well. I don't know how long this method has been used, but i'm confident that it goes back as far as steam power.
@@TheTomBevis completely understand that you may be skeptical - but at any time you have questions or would like more information we would be happy to talk to you. Our technicians can explain in more detail the thread profile and how it pulls material together. It is quite revolutionary! Appreciate you watching and your comments. 800/736-8261 or 209/632-2345 or info@locknstitch.com
@@LOCKNSTITCH lol,,,patented tread design,,,it's just a tapped in bolt,,,how could it pull the sides together and hold them,,,why not nickel well it anyway and know for sure,,
This even works to fix cracks in combustion chambers. When you weld... as is cools it shrinks... surrounding area is solid... something has to give... usually the weld... weld two separate pieces of cast iron together not such a problem as each piece is free to move as weld contracts. These plugs wedge in to the threads nice and tight and don't shrink or pull away .... welding can work. If metal is clean, if you have oven, or if you can post and pre heat it, or peen right after welding to expand the metal. Then you still have to hope it wont crack. One thing it certain drill out the ends of crack. I would rather pin a cast iron block or head..... you all go on fighting about it now... I have things to do... lol ps.... if you weld you might want to use some sort of ceramic sealer or other in case it cracks or weeps... ;)
Very cool process and video, If i sent a picture of the repair im trying to do to a block, could you tell me if it would work? The issue i have, is the crack is more like a small oblong shaped hole about the size of a fingernail clipping. its not a hairline fracture like this but i think if i used some oversized pins it could work.
You can absolutely send pictures into our customer service team! That is the best way for our team to provide you technical support - thank you for watching and for your comment/question. Send the pictures to info@locknstitch.com with your best contact info and our team will be in touch with you. You are also free to call our offices anytime as well to speak to our team 209/632-2345. Looking forward to speaking to you soon.
Just an tip,use a vac to remove the drill chips. Using a blow gun moves them everywhere you may not want them to be,plus it requires secondary cleanup.
When you need us we will be here for you! You can call or email our customer service team, they would be happy to help you with any repair needs. We appreciate your comments! www.locknstitch.com info@locknstitch.com 800/736-8261
Not at all, great question~the patented thread design actually pulls the material together adding strength. It will be stronger than it originally was!
***** What type of cast iron are you guys talking about TIG welding, have you ever done any? White or grey cast iron is almost impossible with TIG, the tungsten lasts about 2 seconds flat before being destroyed with the porosity created. If this is white cast iron you ain't going to weld it anyway, mechanical studding is one option, maybe not perfect but better than some idiot trying to TIG weld it.
thank you so much for watching and glad you found us! If you ever want to learn more feel free to email or call and speak to our technicians. They would be happy to talk to you and answer any questions you may have 800/736-8261 or 209/632-2345 or info@locknstitch.com
So far, we have never run into such a situation, the only cracked cast iron I ever encountered was in such things as exhaust manifolds and water cooling systems and they were clean break-offs where we welded them with nickel rods. Typically, in the case of a diesel engine, it is [or has been] the practice of most companies to discard cracked blocks, especially if the crack is in the cylinder walls or if it is in a stress point, so no such opportunity has yet arisen. None of our machine tools have cracked, and here out of our own machinery, no engine blocks have ever cracked, the engine heads I cracked long ago were to badly damaged that you could put the edge of a credit card into the cracks and they went all the way into the water jackets on both sides so that water went through the gaps in the valve ports directly into the cylinders. Should such a repair be needed though, I will hopefully b able to locate your company again and request information.
Yes please keep our information on hand - we are just a phone call or email away. We can sell you the products to have your technicians do the repairs in house - for more complex repairs we can have our technicians travel to you to preform repairs; we have crews that travel all over the world. www.locknstitch.com 800/736-8261 info@locknstitch.com
Unless the bolt threads are cut in a way that will hold the two sides of the crack together, I don't see how a bolt will hold the two halves of the crack together.
It's stronger because they started beyond the end of the crack. It is now all solid metal. Whatever caused the initial crack (heat, for example) must start over at the initial stress point but now the material there is in tension, which is the force resisting the spread of the crack. It's not a permanent repair, but it could get ya a few years.
If you look up information about these bolts, the threads are actually cut in a way that produced inward force on the material they are threaded into. There is a relief on the back side of the thread, and a wedge cut into the top surface of the hole, so that when the bolt gets all the way down, it pushes the top metal down and in, engaging the top lock, as well as putting pressure on the relief-cut threads, so that they also pull inward. They actually have a video ( th-cam.com/video/tkCv8WpnqUo/w-d-xo.html ) where they took 2 pieces of steel, clamped them together, and used 2 of these bolts in that seam. They held just shy of 3 tons before it came apart.
I have never seen a cast iron crack repaired like this. Also, whoever made this video was ahead of their time.
Glad you found us Raymond! Appreciate you watching and sharing your enthusiasm for our process. If you would like to learn more about our products or services do not hesitate to reach out to us at info@locknstitch.com
Not only is this an extremely well done video, but your media relations is amazing. I have never seen a company that replies 12 years after they post something!
Casting repair is our passion! Standby for new content - showcasing our incredible products and services! Thanks for watching and commenting.
@@LOCKNSTITCH you better come up with some good stuff. Ive been listening to this accidental asmr for a long time and i need new stuff
Pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp]ppp]pppppppp]pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp]ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp]pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp]pppppppppppppppppppppppppppppppppppppppppppppppppppppppp]pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
@@jackmehoff2363Your comment deserves way more recognition and like a free oversized T-shirt from lock stitch to sleep in while listening to this. 😂😂 “accidental asmr”😂🎉
@@LOCKNSTITCHhey question if you are still here. I have a 1/2 “ crack in a Cleveland block, In upper galley. Where can I get the stuff to do this??? Any advice or help would be appreciated .
In the 80's I worked in the office of partners in a welding company that were working on getting the patent on this system. I typed up the description for the process. The boss would tell people that I could probably do the process as well as the guys in the shop because I knew and understood the system as well as any of them. The idea behind this goes back to the 1700's. But had many flaws that caused failure.The designer went through and solved each one. I saw this used on boat motors that cracked when they weren't properly winterized. They ran as good as new. The locks that run across the stitching pull the crack together in such a way to keep the crack from opening up while the pins replace the cracked material. The locks used in the past would often push the crack open wider and not pull it closed. That really helps to make this system work. The repairs last, they repaired engine blocks and heads to the huge military trucks then would run them for 100s of hours or more without a failure. The man who created and taught me how and why it worked and had me type up descriptions on the process was creative and knew and understood metals. Unfortunately he lacked the vision to understand how to profit from his creation and not lose what he had. Creativity may not walk with wisdom.
Its 2 in the morning and I'm here watching a tutorial I wont ever need or come across in my entire life.
Ya never know
Note that this procedure only works for compression cracks, where the surrounding metal jams against the stitch bolt. It DOES NOT fix tension cracks! (where the crack is being pulled apart by stress) In that case, stress on the part would pull the crack open more releasing the force on the stitch bolt. Sometimes welding or brazing is the only way. :(
I agree!
No way, I'd catch another one of your comments! You're awesome! Great minds think alike!!!! :DDDDDDDDDDD
You obviously didn't watch the next video, installing the locks....
This type of repair has hooks on threads that draws in the crack in the casting that is being repaired. Unlike the method used by irontite product which I've used both methods. Irontite tends to spread apart the repair if you are not aware that this happening. I've had great success in both methods with no failures. Used to charge $100 an inch don't what the price is now
@@ericbruck7958 100% correct - unlike tapered plugs, our patented stitching pins and thread repair inserts pull the surrounding material together adding strength and creating a permanent repair!
My father is a welder/fabricator. He described this process to me but I had never seen it done. I appreciate being able to see it in a nicely described and well lit video! Thank you for sharing this!
Absolutely love this company!! A mechanic (friend of mine) accidentally drilled through the water jacket , while attempting to remove a broken bolt in my engine block on my Camaro. (A power steering pump mounting bolt had come loose, snapping the other bolt clean off below the mounting surface) The great idea to drill it out turned sour the minute I saw coolant coming out of the hole. He apologized and took off. After several calls it seemed hopeless. Nobody knew how to fix the hole in my engine. I worked all night on a custom plug to fit tightly in the hole, with the proper size bolt on the other end. I planned to spot weld it in until I was told it wouldn't work....
So I typed "weld on engine block" into the google search bar and found Mike. He told me about Full Torque and I purchased a kit with drill bit, a tap with special threads and matching insert with a locking pin and glue. It was so simple, I did it myself. I cannot say enough about this ingenious product that came to my rescue.
PS This happened over 10 yrs ago and my 2000 Camaro hasn't leaked a drop of coolant and runs like a champ.
In short: LOCK-N-STITCH is BOSS!
This is GREAT! We are thrilled to read your testimonial about LNS (sorry for the delayed response, TH-cam filtered your comment out for approval in error) We would certainly approve a comment with such high praise, The more people know the more they are amazed at what can be done in the world of casting repair with the LNS products. We appreciate your support and again for the wonderful comment. Would love to see any pictures you might have so that we could share this story on FB - testimonials are the best! Glad to hear the Camaro is still running strong!!
Years ago I heard my father refer to this method of fixing cracks in engine blocks while at sea as a merchant marine. Very cool to see it used, what a great video!
You are right the method of 'pinning' cracks has been around for a long time. The art of metal stitching has improved on the older techniques and the LOCK-N-STITCH patented thread design has the capability to repair castings like never before! Thank you for watching! www.locknstitch.com
I have seen metal stitching done on detroit diesels engines in motor scrapers.
A very successful repair, saving on engine block or head replacements costs .
@@LOCKNSTITCH what are the pros and cons of stiching vs welding?
@@jonathangarzon2798 here is a white paper written by Gary Reed the inventor of our patented products and services that will go into your question in depth - it is all in how cast iron responds to heat that makes welding so difficult www.locknstitch.com/pdf/gmrc_white_paper.pdf
When I worked as a mechanic when I was younger my boss did this on an old diesel truck where parts were not common. What an awesome video!
This is great to watch. Oddly satisfying. When I struggle to get my crap drill to go through a bit of aluminium seeing your kit just eat away at the metal like a knife through butter was so good to see. Great work. Thanks guys.
Thanks Chris! We are passionate about what we do and love repairing what most say is unrepairable! If you ever want to learn more about our products or services feel free to reach out to us. info@locknstitch.com
you guys really hit the lottery with this video
it's like 2 grand
It’s a training video so it’s valuable skills :P usually you have to pay to see these kinds of things...would be awesome if the entire training course was on TH-cam lol of course you’ll get the skills and know how but it won’t give you the paper work and certificate lol
@@drahunter213 Yes of course we can't put the entire training course online, but we do have more info we can share with you if you send in a request to customer service for an Info Pack - we really appreciate you watching and if you have any questions in the future our team is always happy to talk to you info@locknstitch.com or 209/632-2345
@@LOCKNSTITCH Would this work on engine blocks? Was that an engine block?
@@murderdoggg Absolutely it will. This process has been used on countless numbers of engine blocks. If you have a specific repair need or needs in mind that you would like to get product for or a quote for repair please reach out to our customer service team. Pictures always help the technical support team if you have something currently you need to repair. info@locknstitch.com 209/632-2345
This is a brilliant method of repairing cracks in cast iron. I've seen it used 4 times and it has been permanent in each case.
Thank you Robert for watching and commenting! We love when customers share their success stories!
After 11 years he’s still replying to comments, amazing!
Over 30 years in the business and we are passionate about the products and services we offer! Thanks for watching!
What a great idea! You've relieved the stresses in the metal that caused the crack in the first place, then put metal back in to keep it from flexing any more.
Well done!
I first saw this done in the early 1960's on an old flat head Ford V8 engine. The very experienced mechanic used 6013 welding rod with flux removed. Simply drilled a hole, tapped the hole for 1/8 inch rod. Threaded the rod then twisted the rod into the threaded hole. Then cut the rod off flush filed smooth. repeated the process overlapping the threaded welding rod by half until the entire crack had been laced closed. The engine was still in service many years later.
I learned about Stiching back in the 80s in Italy, to save no longer available parts. At the UIM Key West Offshore Race, we Stiched an External Aluminum gas tank, between the sponsons.
This popped up today in my feed. Looks like I've missed this in 2009. Thanks youtube algorithm.
Hey better late than never right?! Thanks for watching. If you ever need us we are here to help.
same here. The algorithm works in mysterious ways.
@@nicolasfiore it sure does! Exciting to see so many new 'faces' stopping by to watch and comment - thanks!
Me too, glad it did though. You gotta watch parts 2 & 3. Brilliant repair technique. Wish I would’ve known about it back in 2012 when I chucked out a bandsaw due to a big crack in the cast iron frame.
Just out of curiosity… has y’all been watching a lot of AvE and abom79 videos lately? Pretty sure that’s how I ended up here..
I’ve done this process on a Ford 427 high riser motor with a cracked lifter valley years ago with no failure. Still going strong. Awesome product. 👍
@@voodoochild8697 amazing to get this feedback! If you have any pictures we would love to share your success story in our social media channels. Thank you for being the best part of LNS - a valued customer.
Great video! I learned of this process years ago working in a diesel engine fired power generating plant. I have tried to describe the process several times over the years and now having this video to refer to, will make it much easier. Thank you!
Thanks Robert and you can also refer people to the website www.locknstitch.com there are some great examples of repairs there as well! Appreciate you watching and commenting.
Will do, thanks!
@@TrojanHorse1959 Feel free to reach out to us if you have any questions or need help! info@locknstitch.com or 800/736-8261
From where I can get job of this field.. I have more than 8 years experience of metal locking
Im a machist.30 yrs.this is why im a machist.you never stop learning.cool job man
Thanks Jim! We are passionate about casting repair!!
I am impressed by this technique. It makes a lot of sense, since welding can and most likely WILL introduce internal stress to the casting. However this technique alleviates those stresses and completely repairs the crack all the way through.
You get it completely! This process pulls the metal together, adds strength. No heat involved, no additional cracking or stress! Thanks for watching and for commenting!
This is the best way I've ever seen to fix a cracked block!!! Great video as well 👍 thank you for posting it helped me alot !!
So glad you found us Ricky! If you have any additional questions or have a specific repair you are working on our team would be happy to help you. Feel free to reach out to info@locknstitch.com or by phone at 800/736-8261 or 209/632-2345
I'm no machinist but this is fascinating
Thanks Mike - we love what we do, we are passionate about what we can offer to our customers. Thanks for watching and commenting.
I did repairs like this working for a company named Metal Lock in Michigan 50 years ago. The repairs worked and saved lots of money and time.
we always drilled a hole on each end of the crack to relieve stress and then welded it. But that was 50 year ago :D
I'm watching this in 2021 and wondering why they didn't weld the damn thing :-D
@@bitterbaldguy
As I understand it, welding cast iron can induce stresses that can cause the casting to fail at a later time. This process relieves stresses.
@@xenaguy01 just sharing some info here: theyve come out with a product called muggy weld just for welding cast. it stays somewhat flexible. if its not available then nickel alloy works well too. you can avoid pre heating cast but still do short sections(3/4") at a time and pein the heck out of it.
@@bitterbaldguy you ever tried to weld cast and get it to take?
@@cuzz63 ummm....yea?
Not too many people do block stitching anymore its kind of a lost art it’s good to see you doing it
Hi Wally - thanks for watching and commenting. At LNS we have been in the casting repair, metal stitching business for over 30 years - manufacturing our patented stitching pins and using our technology all over the world saving irreplaceable castings! If you would like to learn more, or purchase the products please reach out to our customer service team. They would be happy to help you info@locknstitch.com
We used this at the machine shop I worked at for more then 20 years. This crack repair system works great.
dose it make it water tight?
This method has been used for years and is one of the best ways to repair a crack on a cast iron surface, I've used it many times and never had any problems .
John that is great to hear! Thanks for commenting and we wish you continued success with our products! If you need technical support or additional products/services do not hesitate to reach out to us. 800/736-8261 or 209/632-2345 info@locknstitch.com
There are not a lot of this cast iron cylinder heads still produced but we still do this repair on quite a few vortec 350/4.3, Dodge 318/360 Magnum and Ford 3.0 heads. I repaired about a half dozen 350 heads last week just like this.
Brian I am so glad to hear you are having such success with the products! We are always here for your casting repair needs. Let us know if you need us for help with any projects, big or small are team is here for you.
Back in 2016 I was looking for this vid
I typed engine crack fix
Never saw your vid
Lo n behold 6 years later...
I subbed and liked the video
Thank you kind , Sir.
So glad you found us! Please reach out if we can ever be of assistance with products or services. info@locknstitch.com or +1 209 632 2345
my father told me how this was done, have never seen it before. pretty amazing stuff
This company saved my butt and my job way back in 2002. I messed up the layout for 2 knockout holes in the platen of a brand new 1000-ton injection molding machine and bored the holes wrong. These were about 2 1/2" in diameter and were half a hole off. We flew their tech down to Carlsbad, and he stitched in some plugs so that we could re-bore the holes in the right place. Still running ten years later.
Myron thanks for commenting and so glad to know that you have not had any issues and everything is still running! If you ever need us again, products or services we are here for you!
We used to repair flat head jeep engines that would crack, basically the same thing drilling and threading with bolts. This is a nice setup.
Thanks for watching and your comments. If you ever run across a need to repair any casting again, give us a call! We are always here to help. 800/736-8261 or 209/632-2345 info@locknstitch.com Happy New Year!
The guy hand drilling those holes makes it look easy. It’s so easy to get off and drill crooked when your having to apply force when drilling into hard material
Metal stitching has been around for a long time, and I've seen it on machinery and people talked to me about it. This video is the first I've ever seen it done. It fills and stabilizes the crack, but adds no strength. Threads are an inclined plane which generates forces both vertically and horizontally, which tends to widen the crack slightly, which would also preload the threads thereby keeping the joint tight over time. The way the pin is made would stabilize the crack vertically as well. A lot of castings are not that thick, but some machinery castings are. It could be machined flat with the surrounding metal and present a sealing surface with no perceptible imperfections and involve no heat. The only thing I would say is when you see him free-handing the first hole between the holes at 6:50 is, "don't try this at home" without some sort of jig. Also, the metal sure seems to drill nice in the advertisement.
I never thought to repair a crack on a sealing surface, so I'll remember stitching as an option. It is also low risk. However, stitching cannot fix something that is broken and adds no strength. If anyone wants to argue that stitching does, they shouldn't mind if we saw around the crack. The pieces will fall apart in your hands, and you will never get it back together like it was without the compressive force of the surrounding casting. For more than filling a crack, IME the cast iron rod was hard to work with and simply produced a weak zone of embrittlement. Brazing adds a lot of heat which causes warping stresses of its own and not a particularly strong bond. You can end up chasing cracks and preheat can warp things. For most things I"ll continue with cleaner and dye penetrant to find the ends of all of the cracks, stop-drill, a little v-grind, weld with nickel rod, and check again for cracks. This method has been the easiest, fastest, by far the strongest, and seems to mitigate the embrittlement at the joint. I have never had any kind of issue with this method, structurally, warpage, or leaks. Nickle is also not that hard, so it's easy to work if you need to.
Thanks for the video!
Is that with a good pre and post heat using the nickel electrodes? I've been chasing cracks in a piece now. I've tried 7018, albronze stick electrodes and I tried some stainless steel rods that would just blow holes. I'll probably end up cutting a section out for some mild steel at this rate. Good practice though. I think my problem is the pre and post heating but I don't have an oxy acetylene set unfortunately
@@PercyJackson93 I've never preheated with the nickle rod and I never had cracks run on me but I did drill just past the end of the crack. I V grind a little. I've had lousy luck with anything but nickle.
I don't think I'll ever repair a crack in a cast iron casting but I feel compelled to watch these videos anyway.
Watching this brings back memories of going to work with my dad in the school holidays. He worked for a company called Metalock, he worked for them for 40 years, from just after WW2 until his retirement in 1987. The range of applications for this process are almost limitless, and cover every industry. I understand it was Metalock who first patented the process in the Texas oilfields in the 1940s....
I saw this method employed on an engine block. A Cooper Bessemer engine in a 1947 Porter locomotive. I didn't see the process, but now I understand it more completely. Thanks for a great video.
Thank you William for watching and so glad you found us. If you would like to get more information or reach us for products or services do not hesitate to reach out to us info@locknstitch.com
I like the jig for getting perfect results here.. I always eyeball and I also overlap each pin (meaning on a 1/4 inch pin I would start my next hole 3/16 over.. Stitched up many cast cracks with this method and it worked flawlessly.. No sending heavy flat head blocks off to come back with more cracks. Fix it right the first time is my motto. Great product.
Thank you for the positive feedback!
Good products deserve nothing less. Next cracked block, will be getting this kit. Great design.
We are here when you need us! 800/736-8261
It’s nice looking, and I hope works. I had an engine over 100 years old that had this done but still seeping. Had it cast iron welded, looking great and no leaks. Took 6 hrs to heat the 11” bore by 36” cyl. And then about 8 hrs of welding time.
Hi Gail - if you still have 'seeping' we can help. Please reach out to our customer service team, if you send pictures of the leak that still remains we could provide a solution for you. Thank you for watching and commenting - we are here to help you at any time! info@locknstitch.com
I've use this to fix blocks and heads. EVERY time that bolt breaks like its designed to, my heart skips a beat lol.
lol
I’ve seen this technique a few times. It’s great for saving old components that are not readily available today. It’s sad that it’s so rare now, but it indicates how disposable things are today.
Thanks for watching! We love the fact that our process saves and it's green too ~ why scrap when you can fix!
I've worked in the metal trades all my life. Never seen this before. Very good.
Paul that is wonderful that you have such skill and knowledge in metal working! Now you even know about us too! If you ever would like to learn more feel free to contact us directly. Our technicians would be happy to talk to you on the phone or send you more information. 800/736-8261 or 206/632-2345 or info@locknstitch.com
In 1969 I worked for a Detroit based company that did this type of repair. It called the process metal lock and I never saw a repair fail. This saved companies lots of money compared to buying replacement parts. Dirty work!
I know nothing about this kind of stuff. But, I can see a skilled professional at work and you sir, are a skilled professional. Was beautiful to watch this work.
Thank you for the kind comment! We like to think of it as the Art of Metal Stitching! Appreciate the feedback, we are passionate about casting repair.
I did this 30 years ago in a London UK engineering company rebilding engines and machine work. When it closed in 1996 us last five were made redundant. We were the last in London . And I still miss it . Thanks for the memory .....
Angleo thanks for watching!
very good !
would have been better if the video did not cut out at the last crucial part.
This is just a portion of a training series, please feel free to contact our customer sales team if you would like to learn more about our products and services! 800/736-8261 209/632-2345 info@locknstitch.com Thank you for watching and for your interest!
So dissapointed
Are you still trying to sell a 40 year old product?
Second part th-cam.com/video/FIKY--USk7Y/w-d-xo.html
@@calvinthedestroyer honestly it probably still works great
At last ! Phew thanks - I am aware of the process but didn't fully appreciate what EXACTLY was being done - that was simple and clear - no stitch welding after all! a bit like French Pinning which I use on drive shaft couplings. Oh it's the way we (don't) think! thanks for posting
Thanks for the great response! If you are ever in need of our products or services do not hesitate to reach out to us. 800/736-8261 *US Canada or 209/632-2345 or info@locknstitch.com
Recently metal stitched a #4 GE combustion turbine crankcase. The job cost the customer $45K. (A new crankcase was $4 million US). The turbine has been back in service for 3 years now. They are very happy.
Thank you Mark for sharing! We love hear how the process can get a customer back up and running, in turn saving $ by repairing instead of replacing the damaged casting!
Mark Doty recently made a repair, 3 years ago....... Math?
Mark Doty $45k? Must have been hard to get to to demand that kind of labor pricing!
ken cohagen He could have charged more. It's not about labor or materials cost, it's about the value. In many industries you can charge up to half the replacement cost to perform the repair. Think of it, if he had charged them $100k, it still would have saved them $3.9 million dollars for a replacement part. The value is therefore HUGE!
Steve Mentzer That is why even small company's have their own mechanics and metal workers n stuff!
Wow! Great video!. I heard about this technique 42yrs ago but never did one so detailed in the machine shops
Lol, at 6:59 I almost blew at my phone screen. When you don't have access to a air compressor you tend to have that certain habit.
CafeNightster I tried to pinch at a paper map the other day to zoom out 😳
Haha! Thanks for watching
What an amazing product. Used it several times with zero comebacks. I now am a Professor at my local university teaching Diesel Mechanics Technology. We have a two year program that graduates our students with an A.A.S in DMT. We have a dedicated pre-req class for all incoming students called Basic Shop skills. We teach things such as: drilling/tapping, metal work/fab layout, sharpening drill bits, basic and then precision measurement with calipers dial bore gauges, micrometers, and the list goes on. I would LOVE to add a section on using your system to demonstrate its abilities and how to properly use it. The trick is getting the department chairs to agree to the cost so we usually have to demo things and then create a write up/pitch. If you’d ever be willing to work with me, maybe donate a demo kit I can use to show why we should routinely purchase more for incoming students to use LET ME KNOW. I think this would be a great section to add to my basic shop skills class. Just a thought…..either way, great product and God bless!
P.S. I stumbled on this video and it reminded me of your product and how it would be good to teach. Normally, I’d reach out in person, by phone, or email but this was unique. I don’t normally leave too many serious comments but I wanted to try while it was front and center. Thanks and take care.
Hello TJ - thank you for the incredible feedback. Please reach out to our team at info@locknstitch.com and we will be in touch.
This is one of the coolest repairs I have ever seen. You just can't get better knowledge about a cracked engine block
I used this technique on an old jeep block using cast iron pipe plugs almost 50 years ago and it worked like a charm.
This is awsome. Never even new this existed. 2 thumbs up!!!!
Glad you found us! Feel free to call or email if you are in need of products or our repair services. www.locknstitch.com info@locknstitch.com 800/736-8261 209/632-2345 We are happy to give you technical support, answer any questions you may have, we ship products and perform repairs worldwide.
you may have liked and unliked
I’ve seen stitching a few times and I’ve seen your particular process a few times too. Excellent work.
Thanks! We appreciate your positive feedback!
I’m a member of various old car groups on Facebook. I assume you are happy for me to share your products on them?
@@junior1138 Yes please share away - we appreciate your support! You can share the youtube, facebook or website www.locknstitch.com
If you understand this process and how it works from an engineering standpoint, and, you understand the physical properties of cast iron, then you understand that this IS the BEST option for casting crack repair. This will LONG outlast your nickel weld technique every time. I have been using this for years. Go ahead and try welding on a un-replaceable antique one of a kind engine casting that there is only one of in the world and get back to me.
+dl87z28 ..I'll have to try this on my old 1946 Harley Knucklehead....
+Doug Ankrum your best option. I repaired a crack in between the valves on a 1959 KR cylinder years ago and it still holds today. 2 pins right through the seat area then machined right into the pins and installed hardened seats. There are only a coupke old timers I know who still do this. The company who makes lock and stitch used it to repair 20000 inches of cracks in the thick copper roof of our nations capitol building. Good stuff.
dl87z28..I should have mentioned the Harley head is cast iron...cracked at the gasket area...through the Ex valve seat.
not a problem
dl87z28 I
I've got a 6.5 Detroit diesel from a '98 Chevy I've been thinking of doing this on. As everyone knows, those six-fives are known for cracking. There's at least one company in the US that makes aftermarket blocks, but they're easily upwards of $3 grand each, excluding taxes and shipping. This would be much cheaper, and when you're talking about a cracked block, you've got nothing to loose anyways, so it's worth a try.
Thanks for watching and commenting. We are here for all the technical support you need to purchase products and do the repair (or find a local shop to do the repair) info@locknstitch.com or 800/736-8261 or 209/632-2345
Wow, 11 years ago. Thanks TH-cam. This was quite interesting. Never seen it done this way before.
Back in 1968 I worked for an engine reconditioners, we used drill the holes and stitch with brass rod
This is a variation on a tried and true repair method that has been around since the dawn of the industrial revolution.Some if the ignorant commenters here need some actual experience, not internet folklore knowledge.Firstly, cast iron has very, very poor tensile strength, so welding will not be any stronger than this repair, and this repair is stronger in compression.Secondly, large cast iron parts like this are designed to carry very little load in tension, due to the nature of the material, there is no advantage in welding.Thirdly, welding a cast iron piece this large will cause crystallisation around the repaired area and will require a lot of prep time grinding the material to full depth to assure proper penetration, not to mention correct preheat and post cool down of the part, and warpage control whilst heating. There is absolutely zero advantage to TIG welding or any other method on cast iron, it's still going to crystallise around the weld and be weak.Fourthly, brazing would work well, but this is a very large part to preheat and takes the same amount of work to achieve the same result as welding, except it will work much better.This repair is just fine to permanently repair this part. Look up stitch repairing cast iron to see how it was done the old fashioned way- driving iron wedges into a part.
Tig brazing does not require pre heat
Cast iron does. Clearly you don't know your materials.
not always is possible to know which material you got in your hands, tig brazing does not require pre heat , I tig weld but I m 20 years in machining and repairs, already did all the shit possible.
Torch welding this would be a much better aproach. You can easily pre-heat the area before you do your welding, and you can sort-of anneal the area after words to prevent warping and hairline-spider cracks. I work for a guy up in Washington State and he does this almost on a daily basis.
I believe Keith Fenner does this on his TH-cam channel.
I once took a head, from a 4 cylinder dodge, to a machine shop to be rebuilt. I sat the head on the floor and talked to machinist about what to do and cost, the first thing he said was we need to repair the cracks without even looking at it. I said what cracks he took a rag wiped around two of the valves and said these cracks.
Did the shop repair it for you with our process?
@@LOCKNSTITCH I think they did it with using a tig welder.
I put over 100,000 mi. on an engine that had this type of repair done to the cylinder heads. It showed up under magnaflux at the machine shop,otherwise you couldn't tell.
I've heard of this but never saw this process in action absolutely fascinating
Glad you found us Jay - if you want to learn more feel free to reach out to our customer service team. They would be happy to talk to you, answer any questions you have and send you more information. info@locknstitch.com
this video BLEW MY MIND! Great work and I feel anybody can do this... also, I watched at 2x speed and found I could learn just as much and save time this way
+arbyrobot thank you for the positive feedback! We are always here to help if you should ever have a need for our products or services 800/736-8261 info@locknstitch.com
+LOCK-N-STITCH INC. Do you have a dealer/distributor in eastern Canada? If so could you post their name and contact info? Thanks!
FlatBroke612 sorry for the delayed reply, you can purchase direct from us 800/736-8261 or you can reach out to Canxus in Hanover ON 519/364-6051 - please do not hesitate to contact us if you have any questions or need any help info@locknstitch.com Thank you for your interest in our products and services.
@@LOCKNSTITCH how about down in chihuahua, mexico?
@@hardboiledfrog please contact our customer service team - they would be happy to help you info@locknstitch.com
I used to do this at my workplace of an engine re-manufacturers workshop. We didn't have the spacing jig but still managed the process. We had aluminium also.
I followed upon this after Jay Leno mentioned it in order to understand the process. It's ingenious!
Wonderful to hear! It has been great to work with Jay on the show and with his crew on a few other projects. Always wonderful to restore such fabulous pieces of history, have fun in the process, and teach others about the products and services as well. Thanks for watching and following up with us!
As did I.
I've been called out often to weld cast iorn in the oilfields and never liked doing it, used nickel rods and sometimes LH 7018, i always tell them "I can't guarantee it'll hold but they had me do it anyway, I probably had around 45% success rate, doing what your doing is pure genius and I'll research this topic more, thanx for one hell of a video
Happy to excite you with our process Gene! We would love to talk to you more about our products if you wish to contact us directly. info@locknstitch.com or 800/736-8261 The customer service team is always here to help. Appreciate your comments and feedback!
Got to admit, when I first saw the jig used, thought "give me a break" as I continued watching, I realized how it worked. Don't be too quick to judge, is my motto.
Ralph Valkenhoff agree. The repair looks good.
Never seen that before. I really like the process. To me it seems better than all the process to try and weld it
I’m really curious of how well that repair held up all these years? The repair looked simple but excellent to me (retired mechanical engineer).
Hello! Thanks for watching and commenting - the repair is a permanent repair! Please reach out to the team if you would like to get more information about our products and/or services. Happy New Year! info@locknstitch.com or 800/736-8261 or 209/632-2345
It's actually stronger than the cast metal so it should be rather permanent if done correctly. Much in the same way a time sert can be stronger than the original threads.
This has been a proven repair method for a very long time for iron blocks. I suspect it works well with aluminum too. This kit looks very nice and definitely simplifies things.
I read your comment as, “I’m a retarded mechanical engineer,” and thought, me too!
I like when you finish a repair with a hammer blow. Really makes me feel like the job is top quality.
If you want to check out strength you should watch this video we posted testing the strength of the C3 pin! Appreciate you wantching and commenting. If you ever have any questions please feel free to email or call us info@locknstitch.com 800/736-8261 209/632-2345 www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjxyO-K283XAhWrs1QKHfBvAyIQtwIIKzAA&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DtkCv8WpnqUo&usg=AOvVaw2V5ElVIS9yXsif74ipwTND
You sir are very amazing. I was captured by the way you did and explained everything. It was fascinating to watch it from start to finish!
Thank you! Glad you found us, found the process and enjoyed learning more about what we do; the products we manufacture. We are passionate about casting repair and are here to help you if you ever need us.
Do you mean "in rapture"? rather than "captured"?
I, perhaps feel that you do...
Fascinating process! I was wondering why you wouldn't just weld or braze it? Maybe to avoid deformation due to the heat?
Thank you for watching and commenting. We invite you to visit our website to learn more about 'why metal stitching' versus welding www.locknstitch.com/cast-iron-welding.html - if you also would like to have more information about our products or services please send a request to info@locknstitch.com
I had an inner primary on a shovelhead with a big crack and that’s how it was repaired.
How long ago was it repaired?
@@LOCKNSTITCH about 8 or 9 at least. I still have that bike, and ride it.
@@Oldwhiteguy That is GREAT! If you are ok with us sharing your story could you send any before and after pictures to info@locknstitch.com and with your permission we could put a post together on our FB page (we share it anonymously). It is always wonderful to hear from customers like you ~ thank you so much for sharing! Happy Riding!!
@@LOCKNSTITCH sorry but I don’t have any photos. It’s the inner primary and you can’t see. You can share the story np, my friend who repaired it( like you) is very skilled at his job.
Had a pair of rare k-code Ford 289 cylinder heads repaired this way. Worked perfect and kept the engine original. Good ‘ol stuff right here!
I like this, even though I grew up welding and welding is what we did to repair broken/cracked cast iron. Didn't matter if it was a cylinder head mating surface or an exhaust manifold flange.
Hi George, thanks for watching and commenting! If you would ever like us to provide more information to you about our products or services do not hesitate to contact us. Our customer service team is also always available by phone if you have questions. info@locknstitch.com 80/736-8261 209/632-21345
@@LOCKNSTITCH How does this stabilize the casting/crack? It looks counter-intuitive to me.
@@RafaelHabegger Maybe explain why it looks counter-intuitive to you as it is clear that your intuition misleading you... crack can expand via sharp eadge that is cuting more and more of the material with that sharpe edge where forces are concentrated.
Thank you for the great video. I discovered a crack running through the stop pins top and bottom for the forward/reverse gears. The top crack is adjacent to the oil reservoir across from the allen haed plug for draining the oil. It will drain all of the oil over night. Your video will help me get it fixed. There is no way I could ever sell it with an issue like this. Again thanks
You just blew my mind. I'm a welder and repaired cracks in cast iron and are very difficult to make not leak.
Right on! We love when people get just as excited as we do! We are here if you ever need more information or would like to purchase products to do repairs yourself! Our customer service staff and technicians would love to talk to you and answer any questions you may have. 800/736-8261 or 209/632-2345 or info@locknstitch.com Glad you found us
Back in the 1980's I found a set of automotive engineering books my dad had, dated 1950....it has instructions and pictures on how to do this exact repair...using ordinary bolts.
Unfortunately now days things are not repaired as much as replaced...such a shame that some skills are lost in the workshop, but when you start working on motorcycle parts that are 40 years old and unobtainium, you need to repair as opposed to replace as there are no replacements available.
I dont even know how to put up a picture on the wall but this was a delight.
Glad you enjoyed our video!! Thanks for the comment to make us smile :)
I seen this being done 30+ years ago at sea, it held together fine, and I still think it is very impressive guys..
Thom in Scotland.
I don't understand...how are these bolts/screws pulling the material 'together' to build up strength between both sides of crack?
I would like to learn that also. I can see how a tougher metal would stiffen the surface and keep the two sides of the crack from racking past each other, which would keep the crack from spreading due to torqueing loads on the part. But do they withstand tensile loads?
From my understanding, the crack was drilled from end to end. Therefore, the crack no longer exists. All the material involved with the crack was drilled out and then replaced with pins threaded in with red loctite. The pins aren't fastening like a traditional bolt where 2 surfaces are sandwiched together but instead it's just used to fill the drilled hole. The long threads and thread sealant will seal and prevent any fluids leaking through. He's not actually "bolting" the 2 sides of the crack together.
Jay Leno Mentioned you in his latest video.
Thanks! We are going to link the video. We are building a new TH-cam business channel; please stay tuned for new videos! Also if you are on Facebook, please like our page!
Im not selling anything. If its okay Id like to share my website, we feature video of Steve Jobs last project at apple, which is a large spaceship sized campus the size of the pentagon. So if your interested in Cars or technology like Mr Leno, Check it out. its applemothership D0t C0m and if its a problem just delete this video. I just thought id share it, I know now Mr leno You guys appreciate technology. Its going to run on solar power and energy fuel cells. And Il will like your page,
This is the most amazing crack repair system my two eyes have ever seen. I was quite happy to see you drill the Stop Hole at the opposite end of the crack. I work in a machine shop and we utilize Heli-coils on all aluminum castings. This is an amazing system. Where have I been to never have seen this before, lol. Must have been on Mars or something. Lol. I really enjoyed the education here.
Please check out the Full-Torque Permanent Thread Replacement Insert video on our channel. If you have worked with Heli-Coil we would hope you would appreciate our technology applied to inserts. Thanks for watching and so excited to know you are excited. We are passionate about casting repair! Also please feel free to review the web page dedicated to our FT Inserts castingrepair.locknstitch.com/category/full-torque-products
@@LOCKNSTITCH what type of material are the blots made of and is it the same for aluminum heads ?? hi from Australia.
@@johnsmith-ce2tq they are made of various materials depending on the application; for aluminum repairs we do have the stitching pins in aluminum for cast iron repairs the stitching pins are made of steel. Thank you for writing from Australia and apologies due to the longer than normal time to reply. Please reach out to our customer service team at info@locknstitch.com if you would like more information. Thank you kindly for the question and your interests in our products! Happy New Year! castingrepair.locknstitch.com/category/metal-stitching-pins
@@LOCKNSTITCH thank you for your reply you too have a happy new year.
@@johnsmith-ce2tq You are most welcome! Stay Safe
I did not know this was possible
Absolutely! If you are in need of our products or services we are here to help you anytime. Please do not hesitate to give us a call. We are located in California, but can ship products worldwide - can perform repairs worldwide. We also would be happy to give you technical support via email or over the phone. Thanks for watching and commenting! www.locknstitch.com 800/736-8261 or 209/632-2345
@ it is in the patented thread design, it pulls the metal together rather than push the material apart - adding strength to the repair. Please read more about it on this page of our website or you can always reach out to a technician to find out more 800/736-8261 or 209/632-2345 info@locknstitch.com castingrepair.locknstitch.com/item/c2f-stitching-pins/steel-castmaster--c2f-stitching-pins/c2fa-25#About%20C%20Series%20Stitching%20Pins
Similar techniques have been use for a long time. This looks a lot easier. I'm skeptical about the "thread design pulls it together" claim, but it shouldn't matter, just sales speak BS. It will work, and work well.
I don't know how long this method has been used, but i'm confident that it goes back as far as steam power.
@@TheTomBevis completely understand that you may be skeptical - but at any time you have questions or would like more information we would be happy to talk to you. Our technicians can explain in more detail the thread profile and how it pulls material together. It is quite revolutionary! Appreciate you watching and your comments. 800/736-8261 or 209/632-2345 or info@locknstitch.com
@@LOCKNSTITCH lol,,,patented tread design,,,it's just a tapped in bolt,,,how could it pull the sides together and hold them,,,why not nickel well it anyway and know for sure,,
Actually thought people had forgot these skills. Great video
This even works to fix cracks in combustion chambers. When you weld... as is cools it shrinks... surrounding area is solid... something has to give... usually the weld... weld two separate pieces of cast iron together not such a problem as each piece is free to move as weld contracts. These plugs wedge in to the threads nice and tight and don't shrink or pull away .... welding can work. If metal is clean, if you have oven, or if you can post and pre heat it, or peen right after welding to expand the metal. Then you still have to hope it wont crack. One thing it certain drill out the ends of crack. I would rather pin a cast iron block or head..... you all go on fighting about it now... I have things to do... lol ps.... if you weld you might want to use some sort of ceramic sealer or other in case it cracks or weeps... ;)
Very cool process and video, If i sent a picture of the repair im trying to do to a block, could you tell me if it would work? The issue i have, is the crack is more like a small oblong shaped hole about the size of a fingernail clipping. its not a hairline fracture like this but i think if i used some oversized pins it could work.
You can absolutely send pictures into our customer service team! That is the best way for our team to provide you technical support - thank you for watching and for your comment/question. Send the pictures to info@locknstitch.com with your best contact info and our team will be in touch with you. You are also free to call our offices anytime as well to speak to our team 209/632-2345. Looking forward to speaking to you soon.
The Hammerer did all the work. This is when it gets serious
Just an tip,use a vac to remove the drill chips. Using a blow gun moves them everywhere you may not want them to be,plus it requires secondary cleanup.
That's $$$
Don`t care if its old, its gold =)
This is a much more convenient version to the method of "iron wedges"
+100
I will definitely keep this in mind if I run into a crack repair.
When you need us we will be here for you! You can call or email our customer service team, they would be happy to help you with any repair needs. We appreciate your comments! www.locknstitch.com info@locknstitch.com 800/736-8261
The only one whos watching before going to bed?
Same here bro
The "old school" way of doing things is by far the most reliable.
This could save the customer, potentially *THOUSANDS*
Wait, I know it *seals* the crack, but wouldn't it weaken the object? Structurally speaking?
Not at all, great question~the patented thread design actually pulls the material together adding strength. It will be stronger than it originally was!
Thank you, almighty youtube algorithm. This was really informative, even though I don't own any cast iron machine tools, or a tap for that matter
Thanks for watching - next time someone says they have a cracked casting you can tell them who to reach out to!
It's a shame in this day and age this trade and many others are dying out.
Because heating it and TIG welding it would have produced a lot better seal. But this was very impressive.
***** What type of cast iron are you guys talking about TIG welding, have you ever done any? White or grey cast iron is almost impossible with TIG, the tungsten lasts about 2 seconds flat before being destroyed with the porosity created.
If this is white cast iron you ain't going to weld it anyway, mechanical studding is one
option, maybe not perfect but better than some idiot trying to TIG weld it.
I have never seen iron repaired like this. Very intriguing!
thank you so much for watching and glad you found us! If you ever want to learn more feel free to email or call and speak to our technicians. They would be happy to talk to you and answer any questions you may have 800/736-8261 or 209/632-2345 or info@locknstitch.com
So far, we have never run into such a situation, the only cracked cast iron I ever encountered was in such things as exhaust manifolds and water cooling systems and they were clean break-offs where we welded them with nickel rods.
Typically, in the case of a diesel engine, it is [or has been] the practice of most companies to discard cracked blocks, especially if the crack is in the cylinder walls or if it is in a stress point, so no such opportunity has yet arisen.
None of our machine tools have cracked, and here out of our own machinery, no engine blocks have ever cracked, the engine heads I cracked long ago were to badly damaged that you could put the edge of a credit card into the cracks and they went all the way into the water jackets on both sides so that water went through the gaps in the valve ports directly into the cylinders.
Should such a repair be needed though, I will hopefully b able to locate your company again and request information.
Yes please keep our information on hand - we are just a phone call or email away. We can sell you the products to have your technicians do the repairs in house - for more complex repairs we can have our technicians travel to you to preform repairs; we have crews that travel all over the world. www.locknstitch.com 800/736-8261 info@locknstitch.com
I don't get it, What makes this crack stronger than it was before the repair ?
Unless the bolt threads are cut in a way that will hold the two sides of the crack together, I don't see how a bolt will hold the two halves of the crack together.
It's stronger because they started beyond the end of the crack. It is now all solid metal. Whatever caused the initial crack (heat, for example) must start over at the initial stress point but now the material there is in tension, which is the force resisting the spread of the crack. It's not a permanent repair, but it could get ya a few years.
If you look up information about these bolts, the threads are actually cut in a way that produced inward force on the material they are threaded into. There is a relief on the back side of the thread, and a wedge cut into the top surface of the hole, so that when the bolt gets all the way down, it pushes the top metal down and in, engaging the top lock, as well as putting pressure on the relief-cut threads, so that they also pull inward. They actually have a video ( th-cam.com/video/tkCv8WpnqUo/w-d-xo.html ) where they took 2 pieces of steel, clamped them together, and used 2 of these bolts in that seam. They held just shy of 3 tons before it came apart.
@@brentmorris262 you got it! It's all in the thread design, it pulls the material together!