Heat Shrinking Techniques EXPLAINED!! Fixing The HUGE Dent I Just Put In My Roof!
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- Опубліковано 7 лют 2025
- 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.
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!!!!
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
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
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!
Dude you’ve got a talent for explaining concepts and teaching the practice. Thanks for sharing what you’ve learned.
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.
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.
This is the best video I've seen in the topic. I would like to have seen a close up and explanation/ making of which don't you're using specifically for this task. Thanks for such quality video!
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!
What makes you a great teacher is the way you're relating to the novice not the expert. Thumbs up!
Thanks a lot man I’m glad! I have a lot to learn and cannot compete with the experts out there for many years.
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.
firstly , best explanation 👌 of how the metal works
followed by a great demonstration
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.
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
@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!
*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!
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!
I have to say you just taught this old dog an old trick, and saved me a fortune. Thank You
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!
Bro... you genuinely couldn't have explained that more clearly. I have a crystal-clear mental image now of how this works. Side note (just for clarity here): there's no part of me that cares about cars or restoration. None. But this channel is strangely enthralling. Sub'd and liked! I have enormous respect for a fellow craftsman. I came here looking for a lesson on how to fix a bad ding in my rolling toolchest. Thank you for teaching me.
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!
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
I've been wanting to know how to do this going on 2 decades. I went to a trade school, worked in a body shop for 5 years and never learned this. Collision work nowadays just doesn't call for this type of work. But in my heart I am a fabricator and I'm so thankful that I found this channel. I start my new job at a custom car fabrication shop tomorrow and I'll be using a lot of what you've taught me. And I'll be buying your plantishing hammer just as soon as I can swing it. Thanks Karl!!
Amazing work, fantastic step by step of how this is done.
No annoying back ground music has made this so enjoyable to watch, Thanks so much.
Only guy on youtube that uses a brazing tip for heat instead of a cutting tip. I may be exaggerating but not far off. I use my cutting torch for cutting,and a brazing tip for heating. I remember gas welding. Did a lot. Its not easy.
Finally get to watch shrinking with a great explanation. My Dart had a roof dancer,and im not cutting roof off.
Thanks Karl!
Best class I've had in 40 years.
I gotta say Karl, this absolutely works! I am taking out dome spots in my 1956 Chev shortbox bedsides and boy, I thought, hmmm, how am I going to get those out? Well your video did it for me. I purchased a small MAP gas/O2 torch of Amazon. It worked surprisingly well, for what I needed. MAPP is no longer available, only MAP Pro, glorified propane. Anyway, after some 20 hot spots, my panel is flat and no oil canning. Perfect! Big Shout Out to UA-camrs like Karl and Brent!
Thank you máster. If people don't learn the way you teach and explain things, they shouldn't be trying to learn this industry. Thank you again, greatings from Baja in México.
I understood it years ago and have used it several times. Tried to explain it a couple of times, though not hands-on. Most folks can't grasp it using "sign language". It requires a live demo or video as you have admirably done. Great job .
Dude, I don't EVER comment. But I have to say after welding school and what they teach about basics of metalwork, your video and your descriptions of what you're doing and what's actually happening.. just amazing. liked and subscribed! Thank you! Quality content.
You’re so welcome man ! Thanks for tat I’m stoked you dig what we are doing here thanks for subbing !
Had a dent in my old Chevy hood that wood pop up and then down. Metal wouldn't stay put. The metal was stretched and I didn't know what to do until I saw this video. I used your technique and I got the dent out really easily.
Dude... you're a great metal worker, but you're an even better teacher. Your attitude, demeanor, and knowledge are just awesome. Massive appreciation my friend. I can't thank you enough for sharing what you know. It's clear that you love what you are doing!
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.
I really wish this channel was around when I first started working on my truck. I had a really bad stretch in the quarter panel and I tried to heat shrink it and I just ended up stretching it more
until I ultimately ended slicing a chunk out and rewelding it together. I even ended up buying a shrinking dolly, which was a giant waste of time and money I'm pretty sure those waffles in the hammers and dollies actually stretch the metal. I've learned a lot from this channel and I'm very grateful for you
Karl, A highly experienced panel beater explained to me how he does it and it's a little different to your technique. He said when the hot-spot pops up he puts the dolly under and starts hitting around the hot-spot and pushes the metal into the hot-spot and then taps the centre at the end, he described it like squeezing a zit (pimple) on your face! The end result is the same, just a little different approach. I asked him what he thought of shrinking hammers with the serrated face, and he said the same as you - they are a total waste of space; this made me feel better because I couldn't get it to shrink anything. Thanks for sharing your knowledge.
There is one more way to do it. Just heat it up and cool it instantly down with a wet piece of cloth. The metal shrinks by itself and gets more tension.
Your vids are the best I have found on UA-cam, I have learned so much more. Many thanks from Germany.
I have used this technique for many years ,, but if you use to much heat on panels to shrink and remove dents and other things ,, the metal is more prone to rust ,, which you will have to address and sort out ...... ..... Your videos are great you never stop learning 😇........ Across the pond 🇬🇧
You have the heart of a teacher, thank you
You’re welcome man thank for watching cheers!
Man. That’s what I love about UA-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!
That is the best explanation of heat shrinking ever. They taught us in college to heat up the cherry then throw a soaking wet rag on it no dolly work
Yes this does work in some cases but I rarely use it. It’s pretty easy to get warps in the metal that you would have to hammer and plan it anyway so why not control the shrink with a hammer and dolly
hitting the raised high spot after heating is doing most of the shrinking. You have a ^ shape and you punch the centre down gathering all that metal into a flat area, once that has happened you could cool it and you have a shrink, the extra hammering around will gather slightly more metal as you remove the wrinkle around it but mostly it helps planish the area back flat again. On a real buggered panel you can also use that time to dolly up and hammer down the immediate surrounding area of the heat shrink.
Another thing you could show is on a terribly stretched panel you can gather the metal by having a point of a dolly on the underside and hammering around it to create a big high lump to shrink down.
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
My friend I am an old man with very similar interest. You are gifted with your understanding of metal . It encourages me and pushes me in my work to see such young people working their dreams. I am glad I found your site ! Be safe and God bless .
Thank you so much! I’m happy to hear that the videos encourage you to work. I love this craft and hope there’s always a place for it
I have been silently watching your videos sir. You are an excellent instructor/teacher!
🙏🙏🙏 thanks man!
I was looking for the video that you indicated the 3M row loc disks you use on welds...
That is the best explanation of heat shrinking I have come access, makes a lot of sense.
WOW ,I over worked a small dent yesterday and really stretched the metal, watched your video last night and twice this morning, decided to tackle my mistake going by your instructions, just finished and had to text you, worked fantastic, Unbelievable, Thank you so much for your advice 🤗
Very nice demo, on shrinking..
Somebody once told me, if metal don't act the way you want it to, you're either heating or beating the wrong place....
Those are words to live by, in my opinion.
Absolutely! It’s all about reading the panel that you’re working with to find out where the damage is truly happening
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
I really can't imagine that people like this exist. i I have gone to learn work in 2 garages. But they don't say they are working. I am at a certain level now. I have seen heat shrinking (not done). Most people don't know the method of just heating it and hitting it with a hammer. I always watch your videos. I highly appreciate your explanation. Keep this star 🌟✨️
High value video, bro. You made me think of using a razor blade and a straight edge to create a grid on the sheet metal, then stretch the lines, then shrink them. Just to see how it works.
First time I witnessed this was in Korea on a ship being built. The main deck plates were in place but you could feel and see wavy bows and dips in some plates. These guys came out with torches and water and would heat the plates in specific areas then hit them with water and you could see the plates tighten. I was an electrical guy so this was cool as hell to watch. Just recently came across your videos and am really enjoying them. Very helpful stuff.
Excellent tutorial as a novice you could watch forever and never realise what was happening. Knowing the basics puts you on course to learning and with experience opens up a world of projects.
Thanks so much man I hope more people watch and more people try this themselves!
I am a middle aged guy who is a gearhead, but I have never tried much body work. I always looked at it as Voodoo. Now I have a 54 Belair that I am re-doing and I am gonna tackle the bodywork thanks mostly to your videos. I could never afford for a bodyshop to do it. Thank you so much for your very enlightening and informative videos!
That is probably the best explanation for heat shrinking that I've heard
So happy to hear it man!
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.
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!
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.
I cant tell you how helpful these tutorials are. Even after building cars in my garage for years, I learn something new or a better way to do it.
That’s great to hear man thanks !
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.
Great video Karl, I have just started trying heat shrinking, definitely takes practice to get it. One thing I hoped you would have mentioned in more detail is heating speed. Meaning saying Do Not attempt this with a typical Propane torch. The flame is to large and not hit enough, attempting to use a propane torch will result in a huge effected heat zone adding warping to the panel.
Thanks for your public service, mister. Good videos. It's grest some good folks make consumer tests (Project Farm), DIY videos (like you) and product reviews.
Excellent explanation of heat shrinking Karl! When I was in trade school we had to hammer on dolly until we had a big stretched "bubble" in the roof of a 55 Chevy about 3" around.. then we had to shrink it down and metal finnish it perfectly with a file. The the instructor cut a 3" square out with an air hammer in the same spot and we had to oxy weld it and hammer it, (hammer welding) then metal finnish it to perfection again... a very valuable lesson on how to control distortion.. we were not allowed to use any bondo until the second quarter...I agree with you about " shrinking " hammers...worthless...every hammer is a shrinking hammer if you know how to use it properly...keep up the great videos you have a gift of explaining complicated concepts..
Wow you Musta had an excellent teacher! I wish they were in school for this stuff here! I would be all about it. Thank you so much Jeff! Cheers
@@MakeItKustom yes... I was blessed to have fabulous instructors in trade school..but that was over 40 years ago.. they were actual tradesmen before bondo was invented ...truly old school...doubt that is taught anymore in the age of throw away tin can cars.. but the stuff you're showing your viewers is very similar to what I was taught... bear in mind at that time mig welding was just starting to be introduced in the autobody world... we stick welded frame repairs and brazed quarter panels on back then.
Your explanation of how these techniques work is excellent! Very informative.
I watch a bunch of videos on metal working. Most of them I run at 1.5 to 2x speed, because there is a lot of fluff. You and Ron Covell I play at 1x, and I rewind a lot. Great content, great presentation. I love the "no excuses" mindset, and working with what you have in front of you. Thanks!!
Heat shrinking... such a loosely used term until now thanks to you and that Brian Zuck guy👍👍👍its nice to know the science behind a method of work👍👍👍
Yes this isn’t the only technique but it is the one I use the most! I am so lucky to of learned it from Brian it only took him one minute to explain it to me though lol he has a way with words and I guess in person is a different story
@@MakeItKustom I reckons we must invite Brian over to the Channel and lets have a dose of his greatness ...if he still around👍
Just want to thank you for the best and easy explanation of how to heat shrink. much appreciated .You made it simple and now I'm confident.
Right on Peter you’re most welcome I’m super glad to hear the information was clear to understand! Cheers
I remember learning to shrink I was 14 and hated it , now 59 love to shrink metal if I can in different techniques , amazing when you understand metal. it is fun to the point you can make the metal perfect !!!!!!!!!
I had a friend show me shrinking once when I was helping him redo the body/paint on an old el Camino. NOW I understand what he was trying to tell me. Thanks.
Excellent! You’re most welcome cheers!
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 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.
Best explanation I ever heard of how heat shrinking works. Nice job
Thanks so much man glad to hear the explanation is clear and accurate
You did a very good job on explaining how to do that? I've been waiting for someone to go into detail like you have. Thank you!
I heard many explanations about metal shrinking but this is the best one the chemistry of the metal work in mysterious ways you just need to understand this chemistry and perform your technic and it works. Awesome video thanks 😊
You’re so welcome! Thank you very much cheers
Thank you for this great informative video. I always wondered how they worked this but like you I never could find anyone to explain the proper procedure on what is going on. Ive tried it from what Ive seen done and never could get the results the same way I've seen it done. I knew I didnt understand enough to work it the way they did. Again thank you for explaining it. You're the only person that has explained it to me. :)
Glad to pay it forward with this knowledge!
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!
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 !!
Great job explaining this technique! I filled the marker lights on my 72 C10 and warped the crap out of my panels with too much heat, welding too quickly. I managed to hammer and Dolly most of it out but need to shrink several spots. Now that I have an understanding of what I am doing , it should be an easy fix! Thank you!
You’re welcome! And thanks for watching and supporting!
hands down the best metal show on the air keep up the good work
Thank you!
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!
I am a newcomer to your site, and I have to say I am WAY impressed! I've watched four of them so far and have learned a ton. I have been trying to be self-taught and had some medium success last summer. Now I am anxious for the snow to melt so I can get out and apply what I've learned from you. Thanks very much, great job!
Cheers,
Richard
Utah
You’re very welcome RICHARD thanks for watching him glad you found the channel! Cheers
Nice demonstration and super nice that you actually answer questions in the comment section. Thanks for a job well done!
You’re very welcome thank you for your kind words!
SUPER!!! Thank you for making a clear detailed explanation of how this technique works.
I started welding with a torch,decades ago. I really liked welding cast iron with cast rod and flux. I appreciate the knowledge you share. I have never tried heat shrinking but, it would have been very handy,working on the hood of my 1957 Massey Ferguson tractor.
I like welding with a torch to! There’s so much you can do with it
A great way of explaining heat shrinking.
This technique is called annealing softening the stretches in the steel so they can be manipulated .
Heat shrinking is a technique where heating metal so when cooling becomes smaller / tighter the wet rag is used to stop the shrinking process right at the desired level of shrinkage, the steel will always be highest at the torch side and carbon will always be added to the cherry red steel.
Overall Good delivery of the topic.
When I started the trade that is all was Available Oxsee acetylene. Even to pull panels we brazed the tabs on. Love your Chanel 🇨🇦
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!
Best description and demonstration of heat shrinking I've watched. Thanks
Right on Bret so stoked that it was clear for you! Cheers!
Best explanation I've seen on heat shrinking metal, well done mate
Thank you very much!
Fantastic explanation. Even better demonstration. Thanks! Respect from Texas
Right on man thank you so much! Cheers
In BlackSmithing, hammering steel back into itself is called "upsetting". In your demonstration, Karl, you are upsetting sideways. Great demo. I never thought of it that way before. Thanks.
I'm really old school. 65 old. Oxy/Acet is still the best way for metal work. You're constantly heating and shrinking the metal. Making it do what you want. This mig stuff where you have to grind down hard tack welds is just a "quick - fix" for body shops. A nice slow relaxed method is much better 😉
Good work my friend! As an old welder since 1975 i do steel from about 10 mm to 30 mm! Same work but more heat! Regards from Sweden! Well, 24 mm are about one inch!
And the roof need only sandblastring so all rust go away!
You are just full of knowledge and you share it so well. Thank you.
Many thanks for the explanation. I have watched a few people demo this, but I have never heard anybody explain what was going on. great teaching vid.
Thank you so much! Glad you enjoyed it
The old saying about history repeating itself certainly applies today. Back in the fifties, when I became interested in body work and hot rods, heat shrinking and hammer welding were common practice. Of course, this was prior to mig welders, thinner body metal and body filler.
New to your channel and must say you are doing an exceptional job of explaining and demonstrating. Your wife does a great job on the video too. Best of luck to you guys.
I might suggest that anyone attempting heat shrinking should practice on a junk panel before trying to do this on their own vehicle. You make it look really easy but it does take practice to get really good results.
Absolutely agree with you that practice makes progress and nobody should count on being perfect at it on the first shot you can certainly make a mess of things. Thank you so much for the support and feedback on the channel we appreciate you! I couldn’t be blessed with a better life partner my wife truly is my better half! Cheers!
Your explanation was spot on. Great channel you're putting out!
Thank you!