How To Braze - Tips and Tricks with Paul Brodie
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- Опубліковано 15 січ 2021
- I learnt how to braze in Grade 8 Metalwork. I knew I had discovered a new world and jumped right in, never losing my enthusiasm to this day. I'm self taught mostly and this is what I know. If you have any questions, post them in the comments below.🤓🏁
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#brazing #steel #oxyacetylene #fussyframebuilder
Got an oxy-acetylene set up in the garage recently and was playing around with the flame color and cone length. Initially there was a gap between the flame and the nozzle when i opened up the acetylene. For the life of me I couldn't release oxygen without flame shutting itself down. Re-visited this video, reduced the acetylene flow, brought down the gap to the flame and added oxygen slowly to get a beautiful blue cone. Thanks a lot, Paul (and Mitch). Small things like these are super important for a learner to take each step forward. Keep up the great work. There's no other resource with this level of detailing on UA-cam for us, garage learners.
Sorry it took me so long to find your comment... Yes, it sounds like your acetylene was open too much, but he figured it out.. Thanks for liking our channel..
@@paulbrodieThanks for the reply :) In the meanwhile, your videos have helped me to reach the last legs - seat stays - of my 1st bike! And I am sure there are many others like me :) Thanks coach!!!
You are most welcome. Seatstays are not easy, and I too struggled at first. That's great you have almost finished your first frame. Congrats! And thanks for watching...
Great watching a skilled person demonstrate and talk in such a relaxed and eloquent way. Something very ZEN about Paul. Thanks
Thank you Dick. Appreciate your comments.
It's a one thing that I want to do. Build my own bicycle. Thanks for your time and all of this videos. 💫
Thanks for watching. Building your own bicycle is a great hobby.
Great Job. I am a retired vocational instructor and I have been looking around for a video to teach me brazing. Looked at a lot hackers, but you have done an excellent job , Thank you.
You're an inspiration to me, Paul Brodie. I got into metalworking just last year, and I realized I don't want to be an ironworker, I want to be an artisan, like you.
Well thank you very much. That's a very nice compliment. I hope you do work at it and become an Artisan. Remember, it does take time. I have been at it 57 years...
WOW...great instruction! I learned more little things from you in the time spent watching this vid than I have learned in years of messing around with brazing!! As I have always believed when doing many types of work, the ease of doing the job AND THEN quality you produce is in the DETAILS!! THANK YOU!!
Thank you Don.
I was just practising fillet brazing and stopped to take a break and think about what I was doing wrong and right and saw your video, perfect timing. Great video. Thank you
hey Paul, ill be travelling to the UK for a frame building course, and now watching this to get me a little up to speed! making me so excited to start out!
Good luck with your frame building course. Thanks for watching!
I've fixed torches the last 10 years and I finally picked up soldering the cutting heads. Thanks for the tips!
Thanks for watching!
Great video Paul, thank you. It reminded me of nearly 60 years ago junior high shop class.
Thank you Edward. I remember High School Shop almost like it was yesterday!
Could listen to this guy all day. He has a great way. Thanks for the video.
Thank you Fintan.
I have never done this process or even had it explained to me until I watched your channel. I just built myself a cargo bike for riding with my dogs and I used flux core for everything, its ugly but works. I'd like to be able to learn to braze, first I need to invest in that equipment. But I need to own a torch anyway. Thank you for showing me why I need it soon lol Thank you for sharing your skills and knowledge, you're a very good teacher. I appreciate you
Thank you Michael. Very nice comment!
In
Thank you very much. This is great information for me, as I practice it. Dear Paul Brodie!
Thanks so much, you explained it so well!
I love welding! It is very relaxing to me.
So much thanks for this video. It helps me a lot as a starter!:)
I’ve been struggling trying to do this in class without it bubbling up this helped me out a lot !
Love it! Thanks. My background is with industrial batteries, a lot of welding lead. Years ago I learned that it was important to not have too much oxy which is what you called “oxidizing”. And what you called “neutral” I called a soft flame. Awesome channel, I’ll be back!
Thanks for watching and commenting!
Your bracing-skills are excellent, Paul! As are your skills in general. Beautiful creations you make, and your explaining is pare none. Say hello to Mitch
Thank you Helge. Mitch reads the comments too :)
I put in a search for Brazing - the first lasted about 15 secs before I got bored with introductions, etc...
Next was Dude teaching in college, making bronze trees... That was cool, but not so informative.
Then here...
.
I like your teaching style Paul. Calm, sensible, informative, even the background music was toned down, so we could hear clearly everything you said.
.
I can solder, arc/tig weld, but it's been awhile since I brazed my home (ship)-built morse key and needed a bit of a refresher before I tackle an upcoming small brazing job. I was not disappointed. Subscribed.
Thank you Deebz270. Welcome to our channel 🙂
Always a great way to start the Sunday! Very nice content, as always. I really apreciate this work thank you so much.
Was wishing you had a brazing starter video, so thank you!!!!
Thanks a lot for this educational sharing !
Hi I used to build frames with my father George Longstaff in the UK 🇬🇧 very nostalgic video for me .
We only used the liquid flux in the gas for fillet brazing for a smoother Finish and kept the frames in multi directional spinning jigs when brazing to help keep them in line . The noise of the dyno file brings back memories. We built bikes ,trikes tandems & tandem trikes . Happy days google George Longstaff we built the first ever 2WD mountain trike . 😁
Yes, you definitely have had a lot of experience! Building trikes and tandems is not for the faint of heart. They are definitely a lot harder than a regular hardtail. Thanks for watching and commenting!
Thank you so much Paul. I learnt to Oxy Weld a lifetime ago but have been using a MIG for the last few years. On the back of finding your channel I am off to buy a small oxy set and start repairing a few frames that I have been sitting on for too long. Thanks again. Jeff
Cool, got you going, eh?
@@paulbrodie For sure my friend. Going to practice my brazing and replace rear dropouts on two of my BMX bikes plus fabricate some bits and bobs on my Honda CT110 race bikes. Just need to get a lathe now (hahahaha). Back in the day, my late Dad was a machinist / fitter for Clyde Engineering in Sydney Aust. Keep up the great work and looking forward to watching more of your content. I will give your channel a shout out on one of my shows "The Postie Bike Podcast" ..... have a great day. Jeff
Thank you for making these videos Paul!
Thanks for watching!
Also interested in surface prepping suggestions as it helps with whetting and capillary action and contamination that acts as an anti-flux. Great video once again, thanks!
I sanded the pieces with 80 grit emery cloth..
Great introduction! I’m starting a gig in Automotive restoration, and will need to learn how to braze. This is a great way to get an idea and I’ll be spending after hours hopefully practicing myself! It reminds me of soldering, which is an art unto itself.
Brazing could be useful in auto restoration. Years ago I used to work right next to an auto body shop that did a lot of resto work on MG TC's and such. Not so much brazing, but tacking with the Mig torch when patching rusty panels etc. Good luck, and thanks for watching....
Thanks for the video Paul you've taught me a lot. I have no intention of ever building a bicycle frame but I do need to learn how to braze and weld. This will get me quite a ways down the road. I have a project where I need to stick some round tubing on a piece of angle and this should allow me to do that. Keep the good stuff coming.
Thanks Johnny. We're planning another fillet brazing video in the next while, so that is upcoming.
Thank you Mr. Brodie. I appreciate the tutorial.
Thank you very much!
You're a great teacher! Thanks for all your videos.
Thank you David!
Thank you Paul very informative
Thank you Paul. Very informative for me being newbie.
Thanks for watching!
thanks for the great refresher Paul. Happy New Year
Happy New Year Lance!
I think stalagmite would be a better descriptor than icicle on the braze stacking. I've been welding as a hobbyist for 47 years and never heard of an inline fluxer. That is kinda neat. Don't think I would get one as most of my welding is tig or mig but brazing has always been kind of relaxing to do. Bought a jewelers torch awhile back as I have always liked making little sculptures. Currently gearing up to do metal casting as one bucket list item is to make a 1920-ish Indian from scratch. Which is why I started watching your videos, when I found the Whippet video. Thank you so much for sharing your knowledge!!!
Roundtuit, thanks for watching and commenting.
Hey Paul Brodie! You're back in my feed! Nice! Great video! I had never heard of an automatic fluxer before and I've been brazing for decades. Thanks for the tip.
Usually what I've noticed when people think about lubricating an oxygen bottle, it's those coarse, rusty threads the cap screws onto. I just scribble on them real good with a pencil and let the graphite go to work. It's an old woodworking trick my grandpa taught me. (He did it a lot on the top surface of his table saw. ..and tight door jambs and hinges ..and on the pieces of our fishing poles that sock together. ..). I'm going to be making ice cycles within the hour. I need that kind of practice. I notice my brazed joints look a lot like my soft solder joints with not much stacked up
I'm so glad that we are back in your feed! And thanks for liking our videos... I would use wax on those big coarse threads...
I've been hoping/waiting for this for years from you Paul, these videos are awesome. Laughed my ass off when you burnt yourself at 22:13 after stating you were not going to wear gloves and were going to be careful.
Safety Third! :)
@@paulbrodie Dexterity with gloves and tiny tig/brazing wire isnt the best, i totally get it...Sometimes i feel like too much safety gear puts you into a bubble and makes you forget the big dangers. Little burns/cuts remind you to be careful
Awesome!
I'd say that your automatic fluxer was a good investment, you got that the same year I was born, lol. I'm just starting out learning how to braze, I've never done any type of metalwork before, but this has always intrigued me. So thank you for the video, it was very informative.
A lot of folks don't want to pay for an automatic fluxer, but they really are a good investment that can literally last a lifetime. So glad I have mine. Thanks for watching our video.
Very informative.
WWBD? Man. Much love and respect. If you ever want to build a bike. I have a desire, need and a historical reference to build from.
I enjoyed your very pleasant video, and probably, (hopefully), learned something. Thank you, Sir!
Thank you Bill :)
Thank you!
Thanks Paul. Much appreciated.
No worries, thank you.
Love your work sir
That’s very nice video, thank you for the teaching.
Thanks for watching.
The best presentation ever! But that music killed it, John
Enjoyed the video thanks for your time.
Daniel, thanks for watching!
My favorite gas brazing video
Thank you Gary.
THANK YOU!!!
This is great - perfect timing in my journey! Will you be doing something on fillet brazing some joints on a frame? Weld order; amount of brass to aim for; and even how to file down would be great. Your videos explain things much better than I have seen anywhere else! Thank you!
Watch the rest of his videos! All that info is in there!
Yes that is the plan..
Thank you Paul. I found this video immensely helpful as I try to learn brazing myself through trial and error through reading books, watching videos, and of course bugging my friends who have built frames. Your videos are extremely helpful and informative and will serve as valuable resources for anyone. Many thanks.
Thank you Ben. Very nice comments!
Thank you Mr. Brodie, very informative.
David, thanks for watching... 😉
Hey Paul, I can’t believe it took me this long to discover your channel. I have been a huge fan since I was a kid in the 90’s. I’ve actually been in the basement where (I was told) you first started making bikes professionally.
Tyler, thanks for finding our channel :) That house address is 740 E 22. Same house?
@@paulbrodie That’s it. I was doing some electrical work there, way back in the day. It was pretty cool seeing all the old stickers.
Excellent video
Excelente lección; gracias, es usted un gran MAESTRO!!!!!
Thank you Claudio!
Thanks. You make it look easy!
Thanks Ben. Part of my job is to make it look easy!
Tarantino needs to make a movie in which some serious sh*t goes down in a metals shop just so that he can cast Christopher Walken to play you, Mr. Brodie.
And, btw, great video! As a person who’s always been interested in this skill but never pursed it, I find your presentation engaging and easy to follow!
Thanks very much! Christopher Walken has been mentioned before, somehow... I like him as an actor. And thanks for liking our video....
Nice video and looks like you are a very good teacher and person!
Thank you AP.
Silver brazing some cable guides today. I've only done it a few times so nearly no experience, especially with tuning a proper small flame. This is just what I needed. Thanks Paul!
- "some of those UA-cam videos where the flux is just piled on there" - lol that's me haha. :D
Silver soldering or silver brazing? I always silver solder cable guides. Just remember to keep the cone very close; it really does make it easier.
@@paulbrodie Yes silver soldering. Thanks for the tips!
You have very nice speakers in your shop! The amazing sounding KEF Reference 101😍
Yes, I bought my Kefs back in 1980 I believe...
@@paulbrodie They are on my wishlist. 😃
Just got a job in hvac install great help
now you are doing real brazing. a number of videos on YT are entitled "brazing" but they are doing silver soldering. i learned brazing at 16 or 17 before i learned to weld. a close neighbor showed me how to braze correctly, he worked brazing at Pratt and Whitney jet engine division
Yes, I have heard there is a bit of mis-information out there on UA-cam!
Very good on illustrations very good teaching
Paul you are a great instructor, very through. It[s a pleasure learning from you. I subscribed and am looking forward to your videos
Thank you Jackie. Appreciate your comments!
Thanks Paul!
David, thanks for watching.
So informative. Really appreciate guys taking the time to share this kind of stuff! These skills are something to be really proud of. No matter how advance technology gets I think there will always be a need to join one piece of metal to another.
Yes, the world will always need welders. Thanks for watching!
@@paulbrodie And that’s no bad thing 😂
looking forward to seeing more and getting started myself. 👍
Great Vid, many thanks.
Thank you BL...
Enjoyed this Paul, nice to have found you, ive subbed 👍
Thank you Ralfy.
Thanks for the brazing lessonl Paul! I have to make a tension spring for the Tom Richie inspired belt sander then its finished,
l'll send ya a pic.
Thanks! Might be easier to buy a spring rather than make one...
@@paulbrodie Thanks Paul, I decided to build a spring to fit the shape of the tool a little better. How can I send ya pics? you have an email I can send them to? I dont have facebook or instagram
@@rickfazzini22 fussyframebuilder@gmail.com
I've been watching your videos for quite some time and have finally taken the plunge to teach myself how to braze based on this video. My goal is to make some racks for my next touring bike. You videos are incredible! Thanks for making them. Can you tell me what glasses you are using while brazing? I too need some glasses that will fit over my everyday glasses and want to protect my eyes as best as possible. Thanks again! Keith
Keith, thanks for liking our videos. Any good welding supply shop should have a selection of brazing glasses. You want to make sure the darkness of the lens is suitable for your situation, and that they fit over your reading glasses, if you have them. My glasses came from my father, and he used them in England in the early 60s. Probably hard to find now. Good luck with the racks. Racks are not easy to make.
I believe the purpose of the flux is to stop the steel oxidising which would prevent the bronze from wetting. So the important conclusion from the icicle experiment is the poor join to the steel base. Also be careful with flux - boron causes infertility! Thanks Paul, love your videos.
I believe the flux has 2 purposes. The first is to "help prevent" the steel from getting too hot, and so allow the bronze to adhere. Too much heat will cook the flux, but it does help. The second is to help the bronze (or whatever filler rod..) to flow. Don't worry, I'm too old to have kids.
Thanks for the overview of your brazing process. I'm looking into brazing so I can attempt to braze two broken mounting ears back onto an old cast iron exhaust manifold where it bolts to the cylinder head. What input would you have on preheating the casting before working? I'll be checking out your fillet brazing video as well as that will apply where the flanges meet the rest of the manifold.
@24:09 Both plate and tube will receive heat from the flame but the heat loss will start from the underside of the plate since it is sitting on the thermal brick which is a heat sink.
Yes...
A good well explained video
Thanks John!
Hi Paul, i wish i have found your channel before! Great contents. The explanation of the flame type is what i was looking for. Would be cool if you can film it with a proper exposure in order to see the variations in shape. Ciao!
Yes, hindsight is 20/20. We'll do that in the upcoming fillet brazing video :)
@@paulbrodie great!
I've recently started to play around with a cheap mini oxy-acetylene set from the hardware store. I use flux powder that I got for free from a company that quit brazing. I mix it with deionized water to make a sticky paste, which works quite well. They sold me some nickel silver cadmium rods for scrap price. (Yes, I have good ventilation. Safety third.) I braze scrap bicycle frame pieces for practice and I dream to make a freak bike some day. It doesn't need to be very tough, just tough enough for some show rides. What I wanted to say though, is that you can clearly see when nickel silver cadmium melts, because it's a little dull when solid but becomes mirrorish shiny when molten. That's a really nice indicator.
Yes, you certainly are doing it on the cheap. But it sounds a bit sketchy to me. You say the frame doesn't need to be very tough. I disagree. You want to overbuild it, so it NEVER breaks. Also, buy the best flux. It's all detailed in our second brazing video. Flux is very important. I use nickel silver, but not nickel silver cadmium.
@@paulbrodie thank you for your reply, Paul. You're absolutely right with your attitude, always to overbuild so that the bike never breaks. What I wanted to say, is that my frame will never be used in a mountain biking application. It will be ridden on smooth flat pavement, with no competition whatsoever. But you can be sure that I won't bet my life or my health on bad craftsmanship.
The flux that I got is intended to be used with my particular brazing rods. Someone, who has more knowledge in brazing than me, thinks it's the best for the application. I guess I'm the weakest link in the chain 🤷♂️
@@andrebartels1690 Then I say, Don't be the weakest link in the chain. That doesn't sound good to me,
You built E.T.’s finger not an icicle. ‘Elliot’
Thanks for the tips and your delivery is pleasant. Its important to be pleasant as a teacher. Some people are a wealth of knowledge but ruin it with poor delivery. Thanks again.
Thank you Sir Mixalot. I do my best :)
Nice job Paul.
Thank you.
This is an excellent video, Paul, thank you for making it. I want to improve my brazing skills, and I've been practicing with icicles, but it is quite challenging to do these, without a self-fluxed, and using 15% silver rod. Probably not the best rod for this trick, I reckon-I need to get some others to try.
Thanks for liking our video. Building icicles can be tricky, but don't give up. Silver content can be expensive, so get bare bronze rods, I use 3/32". The automatic fluxer is a great help too, but I know that not everyone has one...
Thanks Paul, for the great instructional videos, Stumbled across the 'Romax' build whilst doing some research and have now binged lots of you videos......GREAT STUFF! Done my fair share of silver soldering on all sorts of small machines, clocks and braze on bike bits. However, Brazing is a different animal. Having trouble finding the right supplies here in Australia.....any suggestions? aggh! (hate those pre fluxed rod!) and in need of bit more practice before tackling the brazing on the frame. Love all the motorbikes in the background. Cheers from Oz Trev-(R)
Try contacting my friend Rob Benson at Tempest Bicycles and/or Chimera Frame Works. He's building so should know local suppliers. Thanks for watching!
I'm just starting to mess around with brazing and your content is amazingly clear and useful. Can you point me to any videos in actually welding thin metal using the same process as brazing?
Thanks Mike. We did 3 videos on brazing and silver soldering. What other videos are out there (similar, but welding...) I do not know, sorry. Just do a search as see what pops up...
What a godsend! This information is gold! Why doesn't this channel have a gazillion views and subscribers?!? People need to wake up! This video alone gets a Like/Subscribe/Bell
Thank you very much. We are slowly getting a little recognition...
@@paulbrodie "The Flux Capacitor is what makes time travel possible."😉
I have learnt so much in such a short time. Thank you such a great video tutorial. In one of your videos you silver soldered the joint and then brazed over the top to produce a lovely blended join. is the Silver solder there for strength or some other reason. Hugh
Hi Hugh, if you look through the comments you will see that I have answered this issue many times, and I talk about it directly in the fillet brazing video. You are confusing silver solder with nickel silver. They are completely different! Silver solder melts at a much lower temperature, and usually has a content of 45% or 56% silver. I use nickel silver from Soudotec and the part # is 6800 and it has ZERO % silver. Because both rods have "silver"in the name I think that's where the confusion comes from. I did not name the rods. Thanks for watching!
Hi Paul! Thank you so much for your great videos! I really appreciate your effort. I am wondering if you could give me some more information on the flux paste that you paint on in the tube to plate demo? I currently use stay silv white in the little bottle with a brush cap. It is so much thicker looking than what you are using. And mine drys out really fast. Any tips would be greatly appreciated 🙏🏻
Thanks for liking our videos. We have made two brazing videos. The second one shows all the rods and fluxes. I think the information you want is right there.
Flux, that I used to use, was a paste- type flux. You dip your brazing rod into the flux, before, and periodically when brazing.
Yes, that can work, but the automatic fluxer really is the best because it is always adding flux to the work area. Once you've used one it's hard to go back to not having one.....
Good stuff.
Thank you!
Great instructional video. Not a wasted word. Thank you.
How do you usually remove the flux after nickel-silver brazing?
Easiest way to remove flux is by running it under hot water. Thanks for watching!
I learned to braze with coat hangers and steel tubing, the melting temperature is close but the large steel tubing acts as a heatsink, it's not the easiest in the beginning, but eventually things are figured out, the steel coat hangers I'm guessing are low carbon, since they are so soft, probably has a lower melting temperature also, not the worst thing to do , and it wirkd
I'm glad it wirkd for you. Thanks for watching.
Hi! Paul. I discovered your channel about a week ago and am scrambling to get caught up on the content. I'm more interested in motorcycles than bikes, but really appreciate the fabrication content regardless. I don't understand the process of pre-brazing with nichol silver and then over brazing the fillet with bronze? What's the purpose as opposed to just doing the fillet? I'm thinking the bronze would migrate into the joint by capilary action when doing the fillet? What's going on there? CHEERS
Yes, you can just create a fillet with the 3/32" bare bronze rod. There are likely many builders who do that. Each rod has it's own characteristics, and I like to take advantage of the best of each rod. They are both strong, but nickel silver has slightly better flow characteristics, and the bronze brazing rod is easier to build up into a fillet. If you only use the 3/32" bronze rod and make only one pass, it's hard to know if the bronze really wicked into the space between the two tubes... Using the 1/16" nickel silver rod, and making a very small pass, I "know" the filler material has fully wicked into that intersection. I'm a #fussyframebuilder so that's why I do things a certain way.
I've done 3 motorcycle frames from scratch using brazing. I just wish more people were still keeping the technique alive , when it comes to motorcycle frames. Sadly it's extremely difficult to find good info on the subject here on UA-cam . However, this channel has given me some good tips to use , and I've been able to apply a few to my last frame build.
Hey Paul, Thanks so much for all of your videos! At one point or another I saw a clip where you talked about which specific type of Nickel-Silver rod you use. For the life of me & after re-watching half or more of your library I cant find that clip.. Can you share with us the type & content of Nickel-Silver rod you typically use? Thanks again & looking forward to more videos!
fwiw, I settled on 1/16" GF72 nickel silver brazing rod from the gas flux co. Not sure if this is the same thing Paul is using, but its what GasFlux folks recommended, so I'll try it out. Thanks again Paul! We all owe you a debt of gratitude for everything you've shared with us on this channel! Looking forward to everything that is yet to come!
So when you solder do you do one joint at a time? When do you reflux a joint? If it gets too hot do you start over or just wire brush it clean and flux it again? When someone has brassed a part and you want to weld it. How do you get rid of the brass?
Hi paul. I got inspired by this video and your 101 video to start to learn bronze brazing. I am looking for filler material, and have found SiliconBronze with a melting temp of 1000C, and Nickel Bronze with unknown melting temp. What are you using, or rather, what is a good alloy to start with?
Thanks.
If you are just learning, use whatever is at hand. The fillet brazing 101 video shows all the rods and flux that I use here in Canada. In other countries you might have to make substitutions.
I've enjoyed all your videos but this one was one of my favorites. Great stuff. I've been brazing for over 20 years but still picked up a couple of pointers which I appreciate. Always trying to learn more.
I FINALLY got around to buying you guys a few coffees. Sorry it took me so long to get around to it!
Btw, can you share the details of the brazing glasses that you're using (brand, tint etc.)? Thanks.
Alistair, thanks for the coffees. We appreciate it! My father was a welding inspector. He couldn't weld, but he failed quite a few welders. The brazing glasses were his, from back in the 60's. The tint appears to be #4 or 4.5. On the bridge is FM 5810, and the arm has FM 1397mm. I guess FM is the brand? They also have the CSA logo, so they must be Canadian, eh?
Icicle....How ‘bout a bronz-cicle? Great tutorial. I learned a couple things to make copper brazing easier for me...thanks!! And again, your teaching style is very good. You are clear, concise and detailed.
Thank you Mark.
I think, than people apply more flux in brazing area when they don't have flux mixed in flame
I first tried oxy acetylene welding and brazing in high school. Your videos have been very helpful, Thank You. I'll never forget a British motorcycle frame that was clear coated over the bare steel to showcase the fillet brazing. From 1/8 in. to 1/2 in. wide, perfect, evenly spaced ripples. When I tried to duplicate this, my appreciation of the craftsmanship was humbling. I mentioned this to a friend who is far more knowledgeable who said that was done with Sifbronze. Have you ever heard of this? Also, your shop and your methods are an inspiration, Thank You for sharing. After watching some of your other videos I find that we are kindred spirits. I too own a H-D Sprint.
Hi Don, Thanks for liking our videos, and that's great you own a Sprint! Model? The brazing style you are referring to has been called "a stack of dimes". That is definitely hard to do, perhaps it was Sifbronze, but perhaps it was Tig-brazing. I think for me it would be easier with Tig. I will check it out...
Would you be able to make a video on silver brazing a lug for bicycle frame building? I am working on that currently, but I struggle to pull the silver braze from one end through to the other end, and I usually end up overheating the metal.
I won't be making that video, but there is one out there. I think a part of the title is "silver brazing". Sorry I can't direct you better than that. It is worth searching for. It's about 20-25 minutes long, and the filming is very clear and easy to see what is happening with the heat, flux, etc. I could not do better. Good luck in your search.
HQ content, thank you.
Hi Paul, thanks so much for your insight into the brazing process. I learned quite a bit watching your techniques. I use a Victor torch as you do. I got it about 20 years ago, and it did not have any flashback arrestors. Do you think they are necessary for brazing frames? I have read they may not be needed when running low pressures, like 3 or 5 psi. Looking at your torch in the video I don’t see them.
I do have a flashback arrestor on my acetylene regulator, not at the torch because that's just extra weight to hold up. I would think of them as an inexpensive insurance policy. You might never ever need them, but if there was a situation you would be so glad you spent a few bucks and installed them. Thanks for watching!
@@paulbrodie Your approach makes a lot of sense! I will get an arrestor for the acetylene tank. Much appreciated.