Heat Shrinking Techniques EXPLAINED!! Fixing The HUGE Dent I Just Put In My Roof!
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- เผยแพร่เมื่อ 10 ส.ค. 2021
- On this episode of Make It Kustom, I'm taking out my frustrations on my roof, and showing you some wisdom passed on to me by a local legendary hot rodder. Heat shrinking techniques explained!! Heat shrinking is a necessary skill for any panel beater and fender bumper!
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The best way is to learn how to shrink is without a backup dolly. The cold metal surrounding your heated dome is actually your dolly. The only time I use a backup dolly is shrinking an edge of a panel. I avoid using the wet rag till the panel cools considerably otherwise it will harden the metal. I heat larger areas than most people, it gives me a higher dome but it’s key to keep that torch moving quickly, otherwise you will have a dreaded hole. the best thing is I can shrink anywhere, not just places I can reach with a backup dolly. Fifty years in the business and still doing it, but at a slower pace. ~ John Buchtenkirch
Thanks so much for this. It’s really making sense to me
Would love if you made a video of your technique too! Nice to learn different ways
Nice video especially how you explained how it works. A guy showed me years ago with the waffle hammer technique and heating and cooling. This makes way more sense . Thanks Karl for sharing
I am 64 and just started learning but take it all onboard , one day I will need the techniques. I studied metalurgy so I can understand how and why these techniques work.
It’s really more of a mechanical process, you dome the metal up by heating, then hammer the dome flat but more importantly thicker and then you have radially shrunk that area. I never use a back-up dolly when I torch shrink, only when I’m leveling out the panel after it has cooled.
15 years in the metal working industry and ive always wondered how you work with sheet steel. found your vids yesterday and have binged them all since then. you have answered so many questions ive had for so long, not only answered them but educated to why and how. Thank you so much for sharing your skills and knowledge. i really appreciate it. THANK YOU!!!!
Well man thanks so much for reaching out with the Feedback! I’m always stoked to hear when someone really appreciates it. I search long and hard for the answers of all these questions and to be able to share them with everyone is my goal
This brings back memories. I'm a 72 yr old retired bodyman, started in the body business at 15. This hot shrinking method you show here worked great on the thick sheet metal of old but as metal became thinner shrinking methods had to evolve. I was fortunate to work with an old metal man that taught me all methods of shrinking, many he developed himself, as well as how to torch weld aluminum sheet metal used by RR and other foreighn cars. By 20 he had taught me how to hammer weld fender extensions on racing Porsches. It wasn't until I was about 25 we even considered using bondo and that was usually for cheap repairs for a used car lot. We either metal finished or soldered everything. Those old shrinking hammers were all but useless unless you knew you were going to solder the panel to finish it. Never use them if you plan to metal finish it. Oh and when I say soldered I don't mean the hack method of drilling 1/8" holes all over the area and them soldering them closed after you've filed the area straight. Only would-be bodymen used that method. Thanks for the trip down memory lane!!!!
Exactly, I've watched many people demonstrate it but I've never grasped it until now. Great job!!!
So awesome! I’m stoked that this was what you needed to understand! I had a eureka moment when Brian explained it this way to me
The best explanation I have heard in all my years since starting my apprenticeship of five years in 1967...EXCELLENT!!!
Best explanation and demonstration I've come across as well.
Say Karl, Got it now, what a great video! I would really appreciate it if you and Kristine could/would make that video on the lost art of acetylene-gas welding? I think so many people have a gas setup in the shop/garage for heating, cutting metal like crusted bolts or studs on their hot rods but very few still pick up the torch for welding? What can a guy/gal do when their TIG/MIG shielding gas is out? I got my first welding experience on gas welding and loved it, just as much as I do TIG today. It’s just a different heat source really, isn’t it?
Thanks again for all you guys do to help make this world Kustom
Cheers
Kevin
I'm an old guy that's just getting into this stuff, I've always been a gear head but I avoided bodywork like the plague. That was an awesome demonstration, thank you! I just subscribed.
Hi Karl. I am about 150 miles south of you. Greatly enjoy your videos. I love gas welding, especially sheet metal. In 1973, I cut the body of a Triumph TR4 into, thru the middle of the doors. Necessitated by being rear-ended by a big Chevy. I welded another back half on using coat hangers as welding rods. Hey, I was poor back then, AND, back then coat hangers were high quality steel. The welded joint never broke or cracked, even after 100,000 miles of wear and tear. Just more proof you don't have to have fancy stuff to get the job done. It is far better to have good quality used tools instead of fancy, new pieces of crap. Keep the videos coming, please!
I love it when craftsmen like yourself encourage guys to give it a go, and you show some good methods.
Thanks man I appreciate that!
Great explanation, this is how I was taught. It might also be helpful for others if you did a video on shrinking a flatter panel that has an oil can effect in it.
Very good suggestion it’s on the list now for videos to come! Thank you
@@MakeItKustom Yeah, I have an oil can effect happening on my '81 Chevy van door.
@@JosephDR me too….VW bus.
A shrinking disk is good but it can quickly overshrink too
I want to see an oil can demo as well on a modern day flat panel.
Props for an explanation that's detailed enough that I know why I'm gonna do what I'm gonna be doing, and shows me *how* the old guys (guys who were retired back in the 1970's) were doing it when I saw it as a kid.
Got a '54 Dodge truck with some damage, a hotwrench, and now - the understanding of how I'm gonna go after a couple of those spots...
Right on man go for it! You got this!
@11:55 a gas welding video would be cool to see! (This video was really good as well, thanks for sharing it.) 👍🍻
Yes definitely I haven’t done it since high school but I would love to get back into it! I’ll definitely do a video on it
Exactly what I was thinking when that torch came out. Getting 240v out to the shop is not happening for a few years, I'm stuck with OA for awhile, and I'm actually kind of psyched for the challenge of learning the skill. Thanks for these awesome videos!
I will be waiting for your gas welding tutorial as I used to do quite a bit of it forty years ago when I worked as an agricultural fitter. I was the only one to just use the torch to weld not using rods. I called it 'self welding' because it was the only way I could discribe it, because it used the metal itself when I had more of it.
I just found your channel a couple of weeks ago and have enjoyed watching very much, I live in the Northeast of England 🏴,near Durham City.
I hope you never run out of topics to talk about. Keep up the great way of explaining your profession. The way you tell it is easy to follow. 👍👍👍👍👍
Definitely on the list man! I would love to get back into some gas welding and talk about it on here. As long as you guys keep suggesting videos I will never run out! Thanks for your feedback!
Very well explained. It is hard to find a good heat shrinking video and I feel this is the best one yet. The explanation at the beginning with the marker was key. Explained so anybody can understand. Good stuff. Will share.
Right on man thank you so much I love your content! Coming from you this is a great complement! Cheers
@@MakeItKustom I follow alot of hot rodder. You have great content and you explain procedures very clear. I have no doubt your channel will grow fast. Great content. Great knowledge and enjoyable to watch.
I really love your teaching, you are a natural.
Thanks a lot Dean! Glad you like it
@@MakeItKustom the way you explain things make me really want to try it and I feel I could do it with practice.
Love to see you do a "Pick and file" vid.. educating people on how to work the metal.
I’ll add it to the list man! I appreciate the suggestions!
Perfectly explained thank you :)
I have been doing this stuff for over 40 years and this is by far the best explanation of heat shrinking that I have come across!! Thanks.
Loved this. As a Blacksmith, this makes perfect since to me. Could you please show how this would work on a large " Oil canned" area. Would you still need to upset/push the metal? or would it be just a heating and cooling technique? Thanks again for such a great explanation of this.
Would like to see that to. Have a roof someone sat or stood on. Pop it out and it wants to pop back in :-(
Yes this would work on a large oil can area but the areas that need shrinking would need to be identified first in many cases if there’s a large oil canned area the stretch is on the perimeter of that can. I will cover it in a future video as many people are asking for the same! Cheers!
@@MakeItKustom thank you. I will look forward to seeing the video.
@@MakeItKustom thank you!
When you shrink you decrease the surface area and increase the thickness of the metal in the area of the shrink. That is where the extra metal goes. The area of the shrink is now thicker. Sometimes it takes many shrinks to remove the stretched metal....... Also the stretched metal is thinner than the original sheetmetal..
Yes, and the real reason it shrinks more on cooling that it expanded on warming is that it's prevented from expanding by the surrounding, colder, hence (at that moment) stronger metal, which is in approximately the same plane. But the molecules have to go somewhere, they can't expand further in the plane of the sheet, so they expand perpendicular to the plane, so the metal is actually getting thicker as it comes up to red hot, NOT when it cools. Of course, it *stays* thicker when it has cooled, and that extra thickness explains why the same volume of metal now occupies a smaller surface area.
Thank you for sharing your knowledge as well! I am learning lots from the experts in the comments such as yourselves! The more people explain it the better it sinks in!
Awesome demo! Thanks for sharing.
Easily the very best explanation and video that I have ever seen on the topic....this one is timeless and will be teaching folks for years. Nice job !!
Awesome! Thank you for the great explanation and example. Never had any luck fixing dents with heat but I now feel like a expert lol
Bloody brilliant, thanks, now i understand. Wishing you all, all the best. Greetings from Norway.
Anyone who dislikes this video or disagrees with this technique has a lot to learn. This is one of the best explanations that I have seen on a very technical subject.
Yea but you are always gonna have people disliking everything just because they are not happy in life. No reason to dislike anything in his videos because he's great at explaining and showing vote to.
@@joshm8661 well said! Karl is the man! (And a hero to me)
Thanks guys I appreciate you both! You’re definitely right there’s always going to be people that dislike and maybe even for no reason but their own life problems. I appreciate your support! My wife has a harder time with the negative comments than I doFrom a young age I dealt with a lot of that shit so it’s water off a ducks back today lol
Excellent explanation. Thank you for doing this.
Nice demo!
This is Amazing these are the best video’s out there!
Your explanation was spot on. Great channel you're putting out!
Thank you!
More excellent stuff! What a great way to learn!
Thanks for the video. Great job of keeping it simple.
Great explanation and instructions. Thank you
I’ve learned so much already from you! You do a great job explaining the whys and how’s of what you are doing. Great job and thanks for the videos!!
You’re so welcome and I’m glad to hear that you’re learning some stuff! Thanks for supporting the channel
Well done, you explain things very well.
Brilliant demo and explanation
Thanks for the demo!
Best class I've had in 40 years.
This is the best example and explanation!!
Thank you for taking the time to explain how you do it. Well done.
Very nice and clear explanation and demonstration, subscribed.
Loving the videos Carl. Awesome way of explaining this. I’m getting stuck back into one of my projects so I’m appreciating all the tips and tricks
Right on Andrew I’m glad you’re liking the con tent! Cheers
I have to say you just taught this old dog an old trick, and saved me a fortune. Thank You
You are just full of knowledge and you share it so well. Thank you.
Great job. Just found Make it Kustom. I've been binging them all! Great teaching. I hope you're in the new shop!
A great way of explaining heat shrinking.
Well enough explained... congrats!!
Well done. Thanks for that
Perfect ! Great job.
You explain everything so well bro another solid video full of juicy info!
Spot on explanation great vid
Really appreciate your work brother 👍
Awesome! You’re great at explaining your techniques, that’s a rare skill to have. I’m a trade sheet metal worker and am 55 years old. Your videos are teaching me stuff I never knew! One thing I’ll say though, when I was an apprentice, we welded everything up with a gas torch or arc. TIG welding was seemingly in its early days. Thanks again mate, you’re awesome 👏
I wish show's like yours were around when I was starting out, I had to learn by trial & error, I enjoy your show.
Me too Joe and that’s exactly why am doing this! It was tough for us learning this stuff
Best description and demonstration of heat shrinking I've watched. Thanks
Right on Bret so stoked that it was clear for you! Cheers!
Gotta love guys like this...paying it forward for the rest of us. Thanks for the lesson!
You’re so welcome man! Thanks for watching cheers
That is the best explanation of heat shrinking I have come access, makes a lot of sense.
Great explanation! I love the pace of your teaching, and the language you use is very accessible to all - Top notch teaching & video!!!
Thanks so much man I really appreciate that!
Dude you explained it perfectly. After many years of struggling to understand shrinking metal, I get it! 👍🏼🤘🏼
I’m getting my Oxy-Acetylene rig out again. I had to quit when I broke my spine but now I can give it another go
Excellent tip, nice work as usual!!!!
That's the best I have seen that explained I can do ok but I bet now I can master it with how he show it
Thanks so much man!
Awesome explanation. Cheers.
Best explanation ever
Too cool! Thanks for teaching.
You have a natural talent for teaching. I just discovered you also. Wish I had seen this when I was restoring my 51 Chevy pickup a few years ago. Keep up the good work.
Your explanation of how these techniques work is excellent! Very informative.
Amazing tutorial and explanation of a process that has always been a mystery to me!
Man I’ve learnt more about metal work from your channel than any where else. Really appreciate your content.
You’re so welcome and I’m glad to hear it!
Nice Explanation! Thanks for the tip.
Greetings from a brazilian fan (Sorry for any english mistakes)
Your videos are the best. Great teaching, dynamic, well filmed, great editing.
I'm learning a lot from them, in fact, I think I'm addicted. Thanks for the many tips.
I appreciate your efforts to explain and demonstrate these, new to me, methods.
So much so, I don't skip the advertisements. I hope that benefits you. Thank you.
Awesome video bro, great explanation
Great explanation!
Great demo...thanks!
You’re welcome Alan!
Great teaching!
Great explanation man. Thank you
Thank you so much for taking the time to go through this! It would be good to see how to deal with major oil canning issues.
Definitely going to do that video soon! It seems to be a common problem for many of you with your projects thank you for your feedback and the suggestions really help!
Nice explanation! It takes a certain amount of feel but that comes with experience. Hopefully people will give it a try now you have laid out a clear how-to. Thanks again for taking the time to help. We need more people like you in the Hotrod world.
Absolutely the feel comes with experience. Thanks a lot man I appreciate it
I have been trying to understand shrinking for a while. You explained it better than any I’ve seen thus far. Now, to try it out. Thanks
Now, finally, I understand! Thanks, JD
I knew you weren't cross with your truck,you don't seem the angry sort of guy.
Awesome explanation,you're a great teacher/demonstrator,I've learnt a lot from watching your addictive videos.keep them coming dude.👍👍
I love it brother thank you for your time
I finally understood how to do it and why. Great description. Your channel is rapidly becoming one of my favorites.
So glad to hear it man thank you so much!
Your teaching technique is great! You make everything easy to understand!! Thank you
You’re so welcome man! Thank you very much!
Gas welding was my first introduction to metal fab. I will be forever grateful for that skill.
Absolutely it was the first welding I learned in school. I didn’t realize how valuable skill of the time
My new favorite channel, loving the how to's!
So glad to hear it man welcome to the channel and thank you for watching!
This was a great video. Keep up the great work. Can’t wait to see your 39 made into a 3 window!!
Thank you! We are definitely going to get into the builds soon our shop routines have changed a bit but we are happy to make these how to videos for now Until we can get back on the cars
Love your videos great advice thanks 👍
Great video and all your videos are super informative! I was going to ask a question then you answered it in the last minute!!! 🍻
I’m just getting into this stuff and this demonstration really helped
*SCIENCE* You're a great craftsman and a great teacher. Thank you for putting these videos together. I'm almost 60, but love to learn new techniques and skills every day as a life long learner!
You make this stuff look easy. At 41 years old I'm making my first foray into sheet metal work by patching a rusted out hole in my old truck's tailgate and learning pretty much everything from videos like yours and watching what the metal does as I work, all with very basic hand tools and Jerry rigged forming apparatuses. So far it's going okay, but this is definitely a big challenge for a first timer.
SUPER!!! Thank you for making a clear detailed explanation of how this technique works.
Great demo
hands down the best metal show on the air keep up the good work
Thank you!
I really appreciate your knowledge and the demonstrations you provide, I'm doing some body work on an old 65 pickup truck and your You Tube videos have been so helpful. Thank you.
Great demonstration!
Thanks a lot man I appreciate you and your content! Cheers
I have watched many videos on this subject trying to understand, ,,,,,,your explanation of this is hands down the best I've seen,,,,,,, I could see I understand exactly what you're doing now!
Awesome explanation and demonstration of the techniques. Thanks for putting together such wonderful content for guys (and probably gals too) who want to learn and use these skills for their own projects. I’m sure it’s a ton of work to put these videos together, so I’m sure I’m speaking for everyone when I say thank you.
You’re so welcome and I’m so thankful that everyone is enjoying what we are doing! And you’re right it is a lot of work to put together and I’m sure it will pay off in the end. The best thing for me is knowing that people are learning something and the industry is staying alive and well. It wasn’t easy for me to learn in the earlier days before TH-cam. Thanks again Steve!
Man. That’s what I love about TH-cam. When you have a great channel like this one… it actually give you the confidence to do it! It’s so well explained!!!
Awesome man I couldn’t be happier that this info is coming across well! I never saw myself as someone that could speak in front of people but when it’s my wife holding a camera it’s so much easier lol
@@MakeItKustom I have a sliding door on my VW bus that needs some shrinking and now I feel I can do it thanks to you and your wife. Very cool channel!
NOW I understand the process! Thanks for sharing, seriously! Enjoy your weekend! Be safe!
Awesome Harry ! I’m glad that you were picking up what I’m putting down lol thank you very much!
Thanks for explaining it like that , I will definitely try that next chance I get, thank you
Great tutorial, you're the man!!! 👍 👍 👍
Splendid explenetation , Thanks . I will start practising and try to learn the technic.