Baler Part Repair Follow-Up and Shop Update - What's Happening Next!!!
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- เผยแพร่เมื่อ 22 ส.ค. 2024
- If you caught Saturday's video, you got to see a tight shrink fit and a near failure of that shrink fit.
In today's video I answer viewer questions and talk about shrink fits and the rule of thumb for shrink fits.
Lots coming up, and a big thank you to my subscribers. 100K is no small feat, Thank you! Stay tuned for the 100K giveaway.
Topper Machine LLC is an entirely manual machine shop located in Spooner, WI. Our videos will highlight some of our shop work.
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Will affirm the shrink fit works, as all commercial aircraft use shrink fit to attach the wheel axle to the landing leg, and those have an almost zero failure rate, despite the average commercial landing gear having a massive 60 ton shock load applied every landing cycle, and the overload margin on that is such that the shaft will fail elsewhere first, or the gear leg itself will fail elsewhere than that shrink fitted area.
Shrink fits are as good, or better than welding.
Hi Josh, it worked you don’t have to explain yourself, some people will pick the the eyes out of needles.🇦🇺
Agreed however it’s good for people to learn when Josh explains his reasoning behind a proses.
Don't worry about us viewers, your business is the "Topper" priority.
Take a break and enjoy those family celebrations! We'll be here. Congratulations on 100k!
Thank you so much!
These follow-up videos on why you do a repair the way you do it are very interesting and informative. With your experience, you know the best way to do things. It's an education to those of us with less experience in these types of repairs.
Congrats on the 100K Josh. Stop explaining your methods, buddy, every man and his dog will have an opinion on every job, we all appreciate your experience and expertise, have a great catch up mate, see you when you're ready
I like the explanations. Helps understand the thought process.
His explanations adds knowledge for us.
Josh Realy man to man! You sir do not have to second guess yourself. If a mistake is made, man up yes! There will alwayds be opinionated people out there claiming all sorts of alternatives or how they would have done it! Sir you know by instinct what is the right thing to do you came through the ropes the hard way and life is all about learning. We are never to old to learn new things, but once you started making videos about how you do it, it in effect means that you have the BALLS to stand behind what you do! POINT
If there is guys saying otherwise let THEM grow a sack and make their own videos and stand by their way of doing things.
You only have to be yourself and do it right the first time and I am positive that if you are unsure or not certain about something that you have enough entegrity to ask someone who does know how to do it right.
Blessings from South Africa.
Well put!
@@TopperMachineLLC. Don't need to prove anything to anyone Josh .Just keep doing things the way you have found best from your experience that gives the results that satisfies you.
Sometimes internet advice can be good and sometimes it can be really bad....Ive had someone incredulous that I could forge a tenon accurately enough to thread it....I honestly have never tried doing it with just a hammer, I always use a spring swage with a tenon die which will make a tenon accurate to within 0.001mm so the ways you do things when you have experience are really nothing like the way you might imagine it from an outside point of view.
On the other hand, my lady who isn't a blacksmith, has found solutions to some of my head scratchers that are simply genius.
I have gotten some great tips from the comments, and some really really really bad suggestions.
As a knifemaker, I use dry ice for sub-zero stages in heat treat on my blades. As it relates to your shrink fits, if you don't do so already, I'd advise making a bath of dry ice and denatured alcohol rather than just nestling the part into a pile of dry ice. You'll get much faster and more reliable heat transfer to your part.
Hope this helps, and enjoy the graduation season!
-Kurt
I keep.meaning to get some alcohol for this. And I'm not talking about for after. Lol
All metals have a known coefficient of expansion, it can be calculated from the known constants, alloy type , temperature and material size. From memory, low carbon steels is 0.000012 per degree centigrade x length. Regards Ray, excellent channel.
Who is ray?
An old Railway Boilermaker turned Tafe teacher now enjoying myself in my shed, very slowly learning the dark art of machining from fellows like Josh. Ray.
So what is the figure I remember- 0.000026 per degree?
Just looked on the Web, carbon steel is around .000012 per degree cellcius, there is also a number of charts in Fahrenheit which give the corresponding figures and most listing all common metals. In most steel construction design and high temperature applications the designers and engineers had to consider the thermal expansion. Ray.
I like these updates. I hope folks stay respectful in their comments so you can keep them up
I hope so too
Turning a short pilot diameter instead of the radius/chamfer has been my preferred method
I like your content, keep up the good work!
JIM ❤
Hey Josh, enjoy this format where you provide explanations. Respect your comments on good as well as bad suggestions.
I subscribed to this channel because the content is authentic, honest and relevant. While some presenters are focused on feathering their nests and product promotion, here you get actual machine shop and fabrication activity without pretense or sugar coating. 100K followers does not surprise me much but it certainly deserves a bunch of credit. Best wishes for continued success and growth!
Agree.
Sounds like a very busy couple of weeks ahead! Best of luck!
Yes, very!
Thank you Josh. Do your catching up. We will patiently wait for you.
Thank you, I will
Your follow-up format is spot on. Short, to the point and responding to the comments. Love it!
Glad you enjoy it!
Take however long you need.
We will be here whenever the footage gets edited.
Thanks.
I appreciate these updates. As a hobbiest, I watch these videos and then read the comments on other peoples way of doing things. To see an update is gold. Cheers
Happy birthday to Christian, many more in his future. C-ya when ya get back, just do what ya gotta do. We understand, & the ones who don't won't matter.
Congratulations on the 100K subscribers, and to the boys on their graduations.
Thank you so much 😀
The cam lobes on my motorcycle are shrink fit. Two cams per head four cams total. Still runs like a clock. Take a break and get caught up. Plenty of vids to keep entertained in the mean time.
Congrats on 100,000 subscribers! I look forward to what's coming next!
Do you purposely do things that look foolhardy to thrill your viewers? Testing the chamfer on a spinning edge with your finger, for instance. Or grabbing a cast iron wheel that has been heated with a torch, with your bare hands. You are the expert, me, the mere spectator. Thrilling. Very!!
Josh, thanks for the information and encouraging shrink fitting. I'm a home shop person, no pro I! I had a 14.9 mm shaft and could only get a 15 mm id bearing. I made a bushing and pressed it on the shaft. I then turned the bushing down to 15 mm. After that I pressed the bearing on the 0.1 mm enlarged shaft.
Fun, yes indeed.
Best wishes and may your days be filled with joy.
It's incredible that at the moment, there are 7.5k views and only 1.5k likes. Seems that a lot of people watch your videos without giving you a like. You always get a like from me on every one of your videos that I watch. I almost always give a like to videos I watch and rarely don't. It's pretty exceptional that I ever give a dislike, but there are rare occasions when it's warranted.
It seems like it's always the ones who don't know what they're talking about who have little to no experience that tell you you're doing something wrong. Funny how that works, I guess all their time spent watching youtube machining videos has made them master machinists. 😂 Keep doing you Josh 👍👍
There are a lot of channels out there that are just hacks. Some very large ones. Sadly they are giving bad information and people are falling for it. But, what do I know? I've only been doing this kind of stuff 25 years and learned all the ways not to do things.
Keep on with the quality content you have been producing and you'll get that million viewers.
Happy birthday Christian, great video Josh, keep'um coming..
When you heat the hole it gets smaller. The metal expands but cant go outwards as tge metwl further away from the hole isnt expanding. So since it cant go outwards it goes inwards and makes the hole smaller. You have to heat the whole part. Life time in mechanical maint in steel industry, i learned this one the hard way.
Aha! See my comment a moment ago. The guy in the other video only heated around the hole, so the hole got smaller. Didn't occur to me that's why, he didn't heat the entire part, as I now realize most folks do, and is correct. And to think I aced Thermodynamics 60 years ago.
We used to heat holes that were bored .001 oversize as a repair in New castings.
As stated it will shrink a hole.
Press fit was a 10 pucker factor.glad it worked.
And if it didn't, I would have done it again.
101k. Well deserved.
Congratulations Josh on the 101k subs.
You Certainly deserve it.👍👍
Thank you so much 😀
Machinery handbook has tables for all types of fits.
Take a break man. We’ll all still be here 👍🇳🇱
As a mostly-newbie hobbyist, I really really appreciate these follow up videos! Thanks for helping us all learn a bit more!
Glad to help!
Congratulations on the subs no explanation required it’s a business not a hobby channel 👍👍👍
Thanks 👍
That's really great news that you're so busy which will keep the business going into the future. I guess with being one of the last remaining shops in the area, you get most of the work. I always look forward to your videos and the extra one is a bonus. But if you can't get the next one out in time, I'll just wait patiently for when it does come out.
Morning Josh,
Your video productions are only getting better and better. Wishing the best of luck to both Connor and Christian, its a big scary world out here and I know your example has been the best role model for them. Im sure Stuart and I both agree that a shrink fit was and is the best way to deal with that, just too bad you dont have access to cryogenics (LN) to assist. The improvements to the shop lighting has done wonders and all looks top notch. For the nay sayers and critics, my advise is " go pound salt". A million subscribers? RIGHT ON ! Lets do it people.
Don
Thanks Don.
Take all the time off you need. We will be here when you come back. Happy celebrating.
Take all the time you need. Your videos are well worth waiting for. Cheers!
I will be here when you get time to show us the work your doing!
Congratulations on 100k subscribers, I can only dream of reaching those numbers. I hope your channel continues to grow
Thanks. Keep at it, you do good work and have been making some interesting videos.
@@TopperMachineLLC Thank you for the encouragement
congratulations
take a vacation, you deserve it!! hey people watch past episodes if you need a Topper fix!!
Don't worry about the comments...most have never done that kinda work and some may think they know better...it is part of TH-cam to get criticism and cheers from viewers..
🇨🇦🤓🤟
Congratulations on the 100k subscribers. Take the time, for the family occasions. We'll see you when you are less work stressed.
Best wishes all.
Thank you! Will do!
just got another subscriber - bring on the milly!
I watch a lot of machinist videos. You fellas are all pretty unique in your attention to tolerances, details..... A lot of the guys I watch are really good, but you are the first that I have seen do this kind of follow up. You took advice and considered it and you filled us machinist dummies in on why. Thanks for sharing. Great video.
Congrats on 100k . Love the content.
Thanks so much!
You just do what you have to do. We’ll wait for you to get to making content as long as it takes. Don’t hurry and hurt yourself.
Love your channel as a fellow Wisconsin resident. Congratulations on a 100 k.
Well done on the 100k subscribers.
If press fits were good enough for the builders of steam locomotives in the 19th century with almost zero failures. Then there is no reason a shrink fit with parts machined to the correct tolerances would be any different.
I've seen threaded and keyed parts fail. So noöne will convince me that is the correct way to repair any kind of crankpin.
Congrats on your 100k! You totally deserved it. Love this channel.
No worries about the TH-cam experts.
Congrats in 100k!
Thank you so much 😀
Weĺl i for one am very impressed with all your work Josh,you have a very good shop and know how to use it all,stay safe.
Thank you very much!
We all learn from our mistakes, sometimes we need to take a few more tries.
Congratulations ✌💖&💡
I have no recommendations or guidance as I am certainly not a machinist (retired highway/bridge construction manager) but love machining videos. I have learned a lot just watching machining videos. I am amazed at how materials shrink or expand with levels of heat or lack of. I subscribe to the Australian machining channel, and he predominately uses heat and liquid nitrogen to shrink fit parts. Typically, his parts mostly just fall together. I love watching how well that works. Thanks for your videos.
I know who you reference, I don't watch him anymore. If you are looking for a great Australian machinist, Max Grant is the guy. He is a true master!
Hej Josh, congratulations with your 100.000 subscribers and good for you that your business is prospering 🎉
Thanks so much!
Thanks!
Thank you.
Don't stress on this. We can wait. All good and interesting stuff to watch. I am not a machinist but I took a few semesters of it in HS back in the late 60's. These were the kind of machines we used although the modern tools and tool holders are fantastic. We only used what I think is called a lantern tool holder with hand ground square stock cutting tools. All these triangular cutters is alien to me. We can hang for a few weeks. I also watch Kurtis of CEE in Australia and Keith at Vintage Machinery.
Keith Rucker is definitely a good choice. Keith fenner, turn wright machine works, is also good
I want a small metal lathe. Sold my dad's... didn't have the space at the time. Now I have the space. Going shopping soon! Congrats on 100K. Glad the business is doing well, perhaps the channel is helping. It's enjoyable content.
One thing I thought of with that shrink fit pin, that would probably be unnecessary, was drilling and tapping on opposite sides of the circumference of the pin at the joint with the wheel and screwing in two small bolts with Loctite and taking the heads off. That would be added security to prevent the pin moving in any direction.
That would be unnecessary. It will never come out.
Heck...just watched a vid from PK. They would have welded that back up, thrown it on the dirt floor a few times, then get it back to size with an angle grinder.
LOL
Take the time you need!!!
Congrats on hitting the 100k mark....looks like we have lots to look forward to in the way of new machining vids.
More to come!
Congrats Josh and Happy to hear your busy.
Thank you!
First congratulations of 100K lovely people who like watching you, well it should be. LOL.
Your method is correct in my book, the only possible issue was pre-heating the wheeled part, an older graphite iron casting would have most likely split at several points, but that was a modern casting made with Spheroidal Graphite it looked like.
Agree 100% on not using screw threads to effect a repair, possibly using a shoulder to tighten against, BUT in a casting of unknown quality and material strength it has too many unknowns.
Shrink or Interference fits alone work excellently on stronger materials, when 1 or both are low carbon steel, then Plastic Deformation can occur. In simple terms thing of Low carbon steel as Stringy Cheese, and medium carbon and alloy steels as Hard Cheese.
Great video and explanation Josh.
epHi Josh:
I am so happy to see that the business is growing. I have been watching for a while. Great to see that hard/quality work is paying off. Doing quality work develops a good reputation. People will pay a bit more for a "JOB DONE RIGHT THE FIRST TIME!" Keep up the good work. Maybe it is time to get in a helper to prep some of the work. There will be a time, in the not to distant future, where you will need help. Now is the time to invest in a good aprentice. Maybe offer a piece of the action. This will help holed on to him so that they do not leave after training.
Good luck: JP
I already have the apprentice through the High School. Looking for his replacement when he goes to the Army. Good help is nearly impossible to find in this area.
Ha Josh you gota do what you gota do looking forward to see what comes after the break .
That's really ambitions aiming for a million subscribers and I hope you get there. But in the meantime, maybe aim for 250k as a stepping point to the big one.
Dream big! I always have.
Good on yuh Josh. Take some time for others, your shop and you. You’ve got a good thing going.
Congratulations on reaching 100K!! You have an awesome channel - keep up the great work.
Thank you so much!
Wish you also some fun with it! Keep well! And good to see that you are busy despite the bad situation in your region! Greetings from Europe!
Don't know if you can get one up your way, but you might like to swap the shopvac you have for a Dewalt "stealthsonic" 12gal. It is only ~100cfm so it should run pretty nicely with that cyclone but almost more importantly it is QUIET. REALLY QUIET. Around here, they seem to be exclusive to Lowe's.
I will check it out
We all need a break from time to time. May it go well for you. Not sure if I said it, but, congratulations on hitting the sub numbers. Keep on keepin' on!
I use a machinery handbook for shrink fit sizes ,I would have gone .002"max heating the complete part everytime. Definitely on the press to save on arse if it goes wrong.
congrats on the 100k , enjoy your time
Thank you Josh!
Thanks for the update Josh. Please note that whichever method of doing a job, there will always be people who will "advise" differently. Just keep doing it the way YOU do it. And speaking of shrink fits... do you allow for shrinkage in the bore as well? In other words, do you make the bore a few thou larger to compensate.?
I always make the pin after the bore. That way I can compensate on the pin. Turning the OD is way easier than boring.
Congrats on the 100k!
I would think threading the pieces would also requiring consideration of the direction turning as you'd want the pin to be tightening while in use. And the cost of taps that size aren't cheap, never mind if LH thread.
It would never work. And if it did, it would never hold up.
On my MAC Velocette i have a slight shrink fit and a fine threaded nut on the big end....(A hot cam and some compression worked the original loose )
Please don’t explain yourself. You did well. Putting on jeans I put my left leg first, others their right. I’m late 70’s and never lost my pants yet. Just keep doing your videos for those of us who love engineering. Complainers are a pain to live with and rarely contribute much themselves.
I knew it would work and work well.
My go to is using the press instead of heating/cooling the parts as i find it less worry some. Why do you prefore heating/cooling, and why could you not press the pin you made back out?
Pressing can actually cause castings to break. Best to shrink fit that stuff. Slip it and and let it grab is way safer than forcing it in.
You do a video as and when you can, you have a living to earn first and foremost. Great watching what you do, but making films is very time consuming, I know done it myself. Best of luck with everything.
If you wanted to take a follow up video to a next level, try and a get a picture of video of the finished part re-installed and functioning. You dont get that from most machining channels.
Like your videos nonetheless!
As I know this would be quite cool, I never get to see the final application. Most of the time I have no idea what the part even is. That is just the way this business works.
You should go into the weirdness of metal heat. Like how you can heat a part with a hole in it and the hole will expand, but if you heat a chain up, the links get tighter instead of more relaxed, and freezing a chain will make it longer.
At what point in metal part size does the internal dimensions of the steel move less than it's external ones?
Thanks for the video. Since I am not a professional machinist, I can not give you advice. All I can say is that you know what works and that is all that counts. I am glad that your channel is growing. I look forward to each of your videos. All I can say is get caught up on your work and make a video when you can. You are a good man.
On the comment about threading and a pin, are they talking about how you drill through the thread edge and install a grub screw to keep the larger part from unthreading? I thought that's was a strong joint since it's used in some hydraulic cylinders
It is a strong joint for non rotating or lateral load joints. Mostly for stationary loads. Hydraulic pistons to rod joints only see push pull on the threads.
What you did there would have worked far better if set up on the press. Took too long to get to the press. Biggest disadvantage you have is no access to liquid nitrogen. By comparison, dry ice -110 F, liquid nitrogen -320F. Nearly 3x difference in shrinkage. Josh locally heated the area around the hole. He stated he had measured the hole before/after and reported .002 increase in hole size. Sounds like the hole increased in size. .002 seems a little much for what heating he did but note that the hole is at the edge of the rim of the plate with two large opening adjacent. The pin did start in the hole but the pin temperature rapidly increased as expected. Then he belted it with a hammer, then he rushed to the press. So it took too long to get the pin seated in the hole.
Pin still seated just fine. It got it done, and it did the job. But it could have been done better and will next time. I learned from this.
It was a good fix and overall fine workmanship. Not knocking the work. Have a great day.
Threads might have worked - IF you'd cut a tapered countersink and a matching neck to the pin. Like on wheel nuts/lugs. Proper torque on that will stop threadwalk. Not saying it's better, only that it's likely doable.
Even then it would have to be a steep taper, with perfect engagement. And I still would not be comfortable with the finished product.
@@TopperMachineLLC You're obviously entirely free to do your repairs your way. But if your concern with threads is that they'll work themselves loose due to threadwalk, a taper/cone like on rims and wheel nuts and the appropriate torque will sort that out.
And I think you're missing the point slightly.
Notice how I specifically mentioned torque?
The engagement doesn't have to be perfect, only good enough so that the torque can pull the pieces together hard enough to create a wiggle-free assembly. That's what eliminates threadwalk and creates a reliable assembly.
I'm not claiming that it'll work for every combination of loads and diameters. But there's certainly uses for it. After all, it is good enough to keep the wheels on your car
😃
The question I didn't ask was about shrink fits inside cast iron. CI is weak in tension and there is the possibility for failure. I don't know whether that part was cast iron, ductile iron or cast steel so I didn't ask it.
Cast is one to be careful of. Ductile cast iron is a lot more forgiving. Steel will certainly not break.
What beer do you recommend after doing a stressful press fit? Have a great weekend!
Anything cold and with good flavor. I really like Michelob Amber Boch
MAJOR EDIT: Pail Stephenson answered my condundrum elsewhere in the comments. It's too early in the morning for me... Thanks, Paul!
'Morning, Josh! I 've seen and done shrink fits for years. Yesterday I ran across a video in which a guy argued whether heating the hole opened or closed it. He miked a bore, then heated around it with a torch, and miked it again. The hole diameter had decreased! Got me to thinking about the mechanics of heat expansion. Now I can't sleep. my cows have gone dry, and we had a hailstorm. As Slim Pickens said in "Blazing Saddles", "I am depressed". Heating the hole and chilling the insert has worked for me for years. If you get bored, I wonder if just supercooling the pin would work without heating the hole. Hope your cow still gives milk now...
It really depends on the material. I have seen where just heating the bore closes it and where it opens it. This was Ductile Cast Iron, it opened up. Had it not, I would have heated the whole part.
im tryin to get time off to get up there
call in sick. Friday would work.
Thank you for the great videos! Shrink fits look like an ideal way to make two pieces almost permanently into a one-piece unit!
Now, how is the right way to do a press fit with no heat? How about a tapered fit? Just wondering!
I heard once, maybe on one of your videos, that one inch steel expands 0.001 of an inch for every 100 degrees it's heated. Is that accurate?
The rule of doing a shrink fit, is "just" shy of having to change your underwear after !
You got that right. LOL