How to fillet braze - From start to finish with Paul Brodie
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- Опубліковано 29 січ 2021
- Fillet brazing is not the easiest skill to learn when you're just starting out, so here's a few tips and tricks to help you get going🤓🏁
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#brazing #steel #bicycle #fussyframebuilder
There's a ton of videos on YT showing clear shots of TIG welding puddles, but hardly any showing the same thing with bronze fillet brazing. You got some great shots of the fillets being laid down here, nice work.
The man just shares all of his secrets!! All these little details add up to some truly beautiful work😍
I guess they're not secrets anymore... thanks for watching!
secret number 1, if you ahve to grind? you cant weld or braze for shit.
@@deadprivacy Where I used to work, we used to say, grinders are for the welders that can't weld. There's no way can a welder achieve a smooth braze joint on a bicycle frame building though, regardless how good he is. It is a must to sand the braze joint to get the smooth result.
Such skill shouldn’t be lost.
@@paulbrodie It took me way to long in life to realize that details, no matter how small, impact everything, and true master is only achieved by mastering every individual detail of the process. Thanks for sharing the details rather than just the broad strokes.
Holy shit I've been waiting for a vid like this for 10 years
So glad your wait is finally over :)
Me too! I might just have to build a frame this summer...
@@brandonb6164 That's a great project. You have to get organized, and there's a whole mental process that goes along with it. Good luck!
Only 10 ha, you must be new.
My local bike shop owner asked me 1day, what do I do and I said welding, and he said he thinks I can braze bicycle frames.
I said yeah, no worries mate.
He went out of business soon after and I've never seen him again.
He vanished.
Lots of people do that, you know.
30 years later I still haven't made any frames.
Being medium size, every bicycle frame seems to fit me already.
The rubber on my gas welding equipment has all perished by now anyway.
Australia doesn't place a value on anything for the last 30 years.
Anything I do is strictly for myself.
Australia wrote of my whole generation.
This is the most underrated video of all time . Amazing skill and amazing ability to teach said skill
Thank you Lachlan. Very nice comment 🙂
Its really refreshing to see actual talent as the main part of the content. The filming and editing is top notch too . Thank you for not dumbing everything down too far or acting like a blow hard
@@lachlanwestrupp7487 Thank you. Your comments are much appreciated 😉
Its so fine discovering how a real artist work ,so much knowledge that he carries throw his life from experience and he gives us here in few minutes for free what he take years to achive .Thank you Brodie.
This brings back memories. Patience and attention to detail. Commercial and Medical/Research Lab even Nuclear Power construction taught me and alot of others learn these skills. Tradespeople build, learn and teach all at the same time.
Master Welder, Master Brazer and a Master Frame Builder. And this is from a Journeyman Pipefitter now retired but still crackin' a 40 hour work week at 63.
Alan, it's ok to slow down.. Thanks for watching!
I could watch Paul Brodie instructional videos all night long. I'm learning brazing right now and he actually shows how to not only make a strong, functional weld, but one that is beautiful, too. I like how he creates a problem and shows how to fix it - great for a beginner like me.
Thanks for liking our videos. Hope your brazing is going well....
I'm a plumber of 45 years, now retired. I soldered lead and silver soldered copper pipe in my trade. I learned a lot by watching your video. Thank you.
Taught my daughter about destructive testing this weekend, so the end of the video was *perfect. Thanks so much again Paul!
I started this video and can't stop watching... thank you so much Sir
Thank you for watching and commenting! 😉
I started welding out of
necce$$ity, and brazing with Tig was all I've ever done.
But now, I have the time to make O/A brazing the next step of my metal joining journey.
By a tremendous distance, this is far and away the best lesson of brazing I have ever witnessed!!!
After watching this, I can't believe the depths of the slobs that have been trying to show me "the finer points" of brazing! 😂
You're quite the craftsman and instructor.
Thanks very much for the great video and inspiration.
You are almost going the opposite direction. I started with oxy acetylene brazing because I couldn't afford Tig. Once you have a TIG machine there is really no reason to go back to oxy-acetylene welding or brazing. Tig will do a much better braze than gas and this is coming from somebody who has done both for many years. I choose my TIG torch over the gas brazing any day
Am a doctor but I now want to start a DIY bike framebuilding hobby because you make it very interesting with your instructional videos ... thank you Paul!!!
Thank you Robert. Framebuilding really is a great hobby; I do hope you get started and build your own frame :)
Anyone else watching trying to improve their welding in tech studies?
no but i wanna take a welding course
OMG - he's the Bob Ross of frame building - Zen Master - So much knowledge and patience. Goals!
Thanks for watching.... Bob Ross has been mentioned before!
This is gold Paul. I recently bought my first gaswelding material but just missed some information to get comfortable with everything. This helped A LOT. You're a hero. Thanks. Keep posting things like this. Greetings from belgium.
I used to teach brazing to kids in High School. Great vid and very helpful. Admittedly I never got to do frames like this, just welding exercises and smaller projects. I taught the kids how to cheat by re-melting the braze a bit like you were doing to smooth it all out. The way I did it was a bit more like running a puddle though.
Thanks for watching.
best fillet brazing vid out there by far..... i made a glass topped "tube frame" coffee table years ago, IIRC I did not snad the fillets...too lazy! and wanted different look, GREAT video work!
Oh my goodness, I've been trying to work out how to set my torch up right for more years than I care to think about. Only now do I see where I was going wrong. This is probably the most helpful video I've ever seen on UA-cam. Thanks both.
Andrew, that's great you are figuring out the torch! And thanks for watching...
There are two things in life I love to do very much and that is cycling and jewelry making. This was such a treat to watch!
Great Lesson Paul, watching the flame with the filter was so interesting, that are great shots. Thank you so much for sharing this techniques.
I'm now binge watching your UA-cam vids, they're so comprehensible, informative, and concise. I appreciate the length of each video and the time you take to show your process of machine work(s). it's far better then when I was apprenticing at a machine shop, where their training was basically waving their hands over the controls and gearboxes telling you what to touch and what not to touch, and sprinkling the indistinguishing word, "thing" around like it was going out of style. I can actually review/ (rewind?) your vids as reference points, precisely. Thanks for your vids, excuse the impertinence, but they're a godsend, as far as much information goes. I don't necessarily work in bike or bike framing, but all of your processes still tracks and can still be applied to other metal working disciplines. I have a small home metal shop, and I'm already inspired build machine tool ideas. Again, thanks.
Eddie, thanks for watching!
I silver solder a few times a year and It always makes me think about my 1969 Rickman Triumph sitting in the corner. Then I thought about your brazing videos and just had to watch them again! Ive always envied Rickman’s fab skills and now yours as well! Thanks for sharing!
Ron, thanks for watching and commenting!
Best teacher on UA-cam! Every second of this video is filled with valuble information at such an indepth level. Thank you!
Well, that's a very nice comment. Thank you very much!
I can’t explain just how appreciative I am for you and your teaching. Can’t wait to give my first frame a go this summer using your videos as a foundation of knowledge; and some other helpful UA-camrs!
Your channel is also criminally underrated.
Thank you very much. Appreciate your comments. Hope your frame build goes well 🙂
some great info in this video , the hole filling technique is great , not my way of flame setting but the results cant be argued with.
I’m French guy, from France, and I discovered your channel today. I’m completely addicted.
When I saw your lesson I would like to return to school and change job.
Thank you for the quality of your teaching. Really impressive and I appreciate.
Hello France! Samuel, thanks for watching and commenting.
An absolute work of (very functional) art!
Ferrum, thank you very much 😉
Hey, as a wanna be framebuilder is really great to see videos like this, somebody who has a lot of experience share knowledge with everyone, is fantastic, many thanks for this series.
I never stop learning.
Epic. Great teacher. He talks about the details that many other teachers kinda gloss over all the time.
Matt, thanks for watching and commenting.
I love bicycle history too. That's an excellent little tidbit, thanks for sharing your knowledge!
Love how those reflections in the fillet look like what I want the zebra stripes to look like when designing a carbon frame in CAD.
We did zebra strips too..oxy-acetylene, orange paint, suctions fans. They still get talked about too.
WOW I will study this as I have to make several motorcycle frames and a locomobile frame. I have done it before but you are never to old to learn more.
You are correct. I am still learning!
Locomobile frame!!! Cool, what year?
It's -8 outside this morning in Moline IL USA and I'm glad I found this channel. I love this stuff! Build on.
But I can buy a second hand complete bike for the price of that box of sandpaper rolls.
My country of Australia put a hidden tax on gas bottles to make us pay for V8 super car racing.
They scammed millions of dollars out of the economy with that trick.
The "Test of Metal" was... Very satisfying.
Hi Paul. I'm enjoying your video very much. I am an amateur (hobby) welder mostly using braze welding techniques (Alberta, Canada). Many years ago I purchased a used Allstate Jet Fluxer, and have this hooked up to my U.K. Saffire welding equipment. Although Allstate discontinued manufacture of the Jet Fluxer unit, they still sell the liquid flux for the bottle. I find that post braze welding, I'm left with a white powder residue on the metal that has been joined (similar to your welds), and is hard to remove. In the U.K., many racing car construction shops use an inline jet fluxer, but in a couple of videos on UA-cam showing their method, there doesn't seem to be any residue left on the metal parts (see "Bronze Brazing Moto 2 Racing Chassis" (Triumph frame), or 'Ariel Atom Braze Welding" (3 videos by a welder at Arch Motors U.K.)). How do you remove the paste residue from your welds prior to painting? I find that if you try to undercoat over the residue, it acts like paint remover and bubbles up the paint. I did this last fall to protect the metal through the winter months, and in the spring, found that it had all flaked off showing bare metal (but no rust on the mild steel fortunately!). Secondly, I note that in the video you braze welded 2 pieces of tubing together - one of them being 4130 chrome moly. In my welding course the instructor, and the hand-outs he provided, make note (using 'Never' three times), to ever use any braze welding on 4130. Tom Monroe in his 'Welder's Handbook" and also the late Carroll Smith (U.S. race car builder) advise: "Never braze 4130 steel. Its wood-like grain will open up and let brass flow into it. When the brass solidifies, the steel will then have thousands of little wedges that cause cracks between the grains. Sometimes the cracks will propagate as you watch!" Featured many years ago in a U.S. racing newspaper, a Formula Ford racer in his 80s, constructed a F.F. frame using braze welding technique solely using 4130. It was never followed up how long the car frame stayed in one piece. I am no expert on metallurgy, but I would appreciate your opinion on the practice. Cheers and thank you. EW
Hello space frame. I always wash off the flux with hot water. Works every time. Maybe the white stuff is a contaminant? I note we are using different fluxes, and probably rods too... I have never heard advice that says not to braze 4130. I have brazed a lot of 4130, mostly bicycle related, and never had a problem. Perhaps the 4130 we use is very different from what you are using.?? And thanks for liking our videos...
Beautiful demonstration, thank you!
An absolute joy to watch a real craftsman at his work. Well done Paul!
Thank you Larry. This UA-cam channel really does allow me to sharpen my skills on a regular basis. Thanks for watching!
Man in school, I haven’t liked braze welding, after seeing this, I wanna get a braze welder for home.
Oxy-acetylene is the way to go...
@@paulbrodie Cheers
You are definitely a genuine craftsman! THANK YOU for sharing your skills and knowledge.
I like that you said I am "defiantly" a genuine craftsman! Thank you...
@@paulbrodie ha... You know my keyboard can't spell.
Thank you. Please don't stop doing videos. I've been watching UA-cam for years and I have never commented on anything. Just wanted to let you know that I love it and please keep them coming
OK, we will keep them coming. Thanks for watching!
I’ve been working with an Oxy/Acetylene torch for over 60 years. I love how much I’ve learned by watching your videos. Something that I have a hard time explaining to new people to the art is the “balance”. This is a term “Balance” I use when explaining the balance between tip size, gas pressures at the tank gages, type of connection, materials, etc. I’ve never found a textbook or reference to afford these new students of brazing and welding? Granted experience is all I have as my reference, but being able to refer people to a good old school textbook sure would be a blessing for all new to the art.
Bill, thanks for watching our videos. I have not heard the word "balance" used to describe all the elements involved. I just know that to get really good results, all the ingredients have to be just right. If one thing is off, (wrong angle of torch for example...), a bad result can be achieved!
What a brilliant combination. Fred Rogers teaching style and frame building 101. Thank you
Thank you David :)
As it’s often said, “every day is a school day”. Great video. I must try harder.
I always try harder. Thanks for watching! 😉
Thank you both. Great video.
Hi from the U.K. - I don't know how I arrived here and I haven't brazed since school (too many years ago), but metalwork was always a favourite subject and this just took me right back. I used to build my own racing bikes as a boy, but from whole frames and components, not from raw tube - great video.
Well, Paul's family decided the UK sucked and they left for a better life.
My family decided you all are crazy and wanted to get as far away from you all as possible.
I'm just gonna hang out here for a while. This is the kind of skilled mentor I've been missing in life. LOL. With all the fabricating, racing, repairs, electronics study I have done online and on youtube....how the heck have I just now found this channel?!?!?
Awesome video.
Thanks Chris. We're glad you finally found us...
Wow! I wish I had a great teacher like this when I was younger. Amazing skill.
When that tube broke, a part of my heart broke off for a second. But then I realised, it was sacrificed for a good reason.
Thank you for this informative and inspiring video 👍
Thank you for the tutorial and appreciate the information on the part numbers cheers 👍😊
pure art 👏
Mr. Brodie, your videos are a treasure. Thank you.
Thank you Matan.
Absolutely amazing video Paul and Mitch. The way in which you explain and demonstrate makes you a first-class trainer/teacher and you share incredible knowledge. This is by far the best and easiest to comprehend video I have ever watched on fillet brazing. Thank you for sharing your wealth of knowledge here on youtube.
Glad you enjoyed it. Thank you Shane.
Not only is he great at brazing but he's also a very good teacher, that is a completely separate skill that most people do not have. You could be an amazing craftsman but not be good teaching that same skill. The amount of detail he gives is very helpful.
That shop is my dream shop, I love the industrial grade machinery, I could build so much cool stuff with that shop.
I wonder what kind of metal he's using? It would be fun to make a custom motorcycle frame.
Thanks for commenting. I use a lot of steel. Yes I have made several custom motorcycle frames.
Really old masters made steel frames using a hack saw ( really fine tooth pitch ) various files and oxygen - Acetyelene tourch setup. Through experience the nice frames were built " free hand " with no fixtures allowing the heat to expand the steel unrestricted and cool naturally. Then hand set for correct alignment. Have fun.....
@@kirstenspencer3630 Thanks Kirsten. I always do try to have fun. Thanks for liking our videos 😉
Paul Brodie is the BOSS!
Well, I was a boss for many years with employees. There's a very fine line between a boss and a friend in that situation, and it can be a tricky line to tread. Thanks for watching!
Love the sound when the tube snaps :D
I used to build kart frames and we had inline flux units- much more convenient than brushing on a paste.
Thanks Mr. Brodie. I am just starting out, and the tips about marking the width, brazing level and moving often and working with gravity are invaluable. Much appreciated!
Kevin, thanks for watching. Brazing is not always easy to learn, but keep at it and I'm sure you will be successful 😉
Hi Paul, thanks for doing this. I was going to fire up the torch for frame 3 and thought I'd watch a pro's technique first. I am so glad I did! I've never had such a mellow experience working the torch! I normally incinerate things and it's crazy how much more control I had backing the valves way down. And I didn't use a gallon of flux either. Being self taught means lots of bad habits to fix later.
Thanks Drew. Being self taught can have its' positives and negatives. After a while the thought process becomes more focussed, and hopefully, the level of understanding blossoms as well. Using a torch effectively really is about the level of control, anti sounds like you are figuring it out.
highlight of my weekend so far!
Oh thank you for such a well put together video. I've been searching for a video just like this for months.
Way nicer than the medical gas brazing I’ve been doing. Hopefully I can find some time this fall to take your course.
Not sure if Framebuilding 101 is coming back. Covid changed things for sure. I fall neatly into the "high risk" category, so UA-cam is how I share my knowledge and experience now...
This is a great video. I'm slowly getting back into doing workshop stuff again after about seven years off and did a small garden tool braze repair today just to have a practice. I might revisit it tomorrow to see if I can leave slightly more beautiful.
Thank you Mr Mukura.
There are some videos in youtube that I feel are precious , in terms of knowledge, that I will use a downloader to save on my computer. Just in case youtube falls or the user's channel get deleted or anything happens.
This one is amongst those videos.
Thank you then for making it.
Thank you very much. We are planning a followup brazing video very soon, so that might be of interest to you as well...
This is the most educational video I have ever watched about flame settings.
A larger fillet is stronger, but the size (for me) is dictated by the size of the spiral roll. Not sure why your question got cutoff from the comments. Thanks for watching :)
@@paulbrodie Thanks Paul, I deleted that part of my comment because you kinda answered the question at the end of the video.
PS: My dad Gene says hi, he owned american cyclery in SF for a while and says he met you at one point :)
@@Max_Marz No worries. Hi to your Dad!
Wonderful Job, perfect DIY knowledge base! Regards.
Thank Paul share your skill online, that made I learn it in UK
Thank you very much.
This discipline is so awesome
The craftsman, the art, the legend.
Jack Lemmon would rather be scary.
Did you see the great race?
It was wonderful!
They're the real deal.
Professor Fate was amazing.
Much better than Paul.
Wow! Awesome stuff here my friend! Thank you for showing us some of your magic!
As a longtime race car chassis builder I can tell you for anyone who wants to be a master at tig welding , first become a perfectionist at brazing! It will be the most valuable technique you can learn!
Chris, I am going to agree with you 100%.. Thanks for watching!
Advice taken. I was going to get a TIG torch for my inverter welder, but I'll get an oxy setup and learn to braze instead :)
Thanks very much for sharing your skill and knowledge. Watching you has taught me some key things to improve my brazing.
Thanks John. Nice comment!
thank you so much for the informative and rare look into your work!! this helped so much and is greatly appreciated!
Thank you Ofer. I appreciate your comments...
Super interesting to see how its done with power tools. I took the Yamaguchi frame building course where we learned how to do it all with hand files. It was a fantastic experience but its very cool to see how its done with power tools.
I always wanted to take the Yamaguchi frame course, but never did..
@@paulbrodie He was a joy to learn from. So much knowledge.
Tools in the hands of a master...
Thanks for watching!
I don't weld but admire experts thta master their craft
Glen, thanks for watching!
Great work. I appreciate you giving your knowledge and time for free for us to learn. Thank you.
I appreciate that!
Great to see you sharing wisdom with UA-cam videos Paul and in Canada, so cool.
I was fillet brazing frames in the early 80s after reading MTB Action mags about yourself, Cunningham, Ibis, Fisher and Ritchie etc' all custom building. Very inspiring to me.
Riders on my frames and myself went on to win some Australian national championships from trials to downhill and survived to still ride today. And I still ride my first ever frame! (and a poorer geometry low BB new al frame bought 2nd hand for kicks.)
Now, I personally remember juggling frame position and passing the torch across my left thumb to hear the crackle of boiling skin so always suggest wearing gloves but more importantly, I remember doing a whole frame one night and woke with a horrible sensation in my lungs and breathing difficulty. It was due to inhaling the acid gasses of the flux!!
I wonder how have you managed to avoid the gasses and not advise wearing a gas mask while welding?
Our skill is a rare thing these days and hope we stay healthy to create for decades to come.
I look forward to seeing all your other videos now!
Personally I've been playing drums since 88 so that's what my channel is full of music, even me playing in my RUSH tribute band Hemispheres. Please check it out it's as deadly accurate as a frame builder's skill should be when playing the music of RUSH!
Kind regards from Melbourne Australia.
Thank you Australia! And for sharing your stories. Yes, somehow I have stayed healthy and continue #makingstuff in my shop. I guess we have slightly different musical tastes. I like building to Pink Floyd. All the best!
Superb videos Paul, thank you! My Dad Andy Thompson used to braze custom frames here in the UK. I grew up around a workshop environment and I think it soaked in through my skin as I now have my own shop making bespoke furniture and sculptures (no bike frames sorry). Thanks for sharing your knowledge and experience! 👍
Thanks for watching!
Love your video. I have a 95 Broidi Expresso that I bought new back in the day, the level of craftsmanship is 2nd to none. I love the fact that you are sharing you knowledge with others.
Thanks Aaron, never seen Broidi Expresso spelt that way before. Correct way is Brodie eXpresso.
Killing that poor top tube - you, sir, are an animal! 😈
Thanks for the tutorial, especially on the flame settings ;-)
Great video, I work with motorcycles and this is full of very usefull information.
Many thanks!!
I have done a lot of motorcycle work too. You can checkout my projects on my website:
www.flashbackfab.com
Great vid, been oxy/acetyl brazing off and on for a while but never had a good handle on the dance with flame and rod till this vid- very nice, I'll try it- thanks!
Very nice video thank you. I'm french, i never did brazing welding or anything in my fucking life, i never worked with people that does brazing, but i just watched all the video, idk why i'm here, but you are a truly good teacher, it was a pleasure to see that kind of crafting, + the way you talk is perfect for foreign people, everything is clear. That's what i call experience, thank you for sharing.
The day i can have a house with a workshop, i know i have to try and learn frame building !
Thank you for the very nice comments. I was in France on holiday in 1976. I remember that wine was cheaper than water in restaurants so the choice was clear: Wine! :)
The Christopher walken of frame building
This is one of those things where he makes it look easy and if I try I would waste $$$ on equipment huh
I'm a firm believer in a bout of fine fingering. It's the only way to get to the required outcome...
... A nice finish.
.
Beautifully done. Learned a LOT!
.
Thanks Teach!
Thank you :)
Rare combination of gifted builder and gifted teacher. Good stuff!
Thank you JAC111.
@@paulbrodie Thank you! We are both of an age where it is time to pass our knowledge to the younger generations and far too few are stepping up to do it.
@@jaciii9396 I agree.
Thank you for showing yor know how! I like your calm way to explain. It's satisfying to wach you brazing :)
You are most welcome!
Yes, Mr. Paul, is a teacher. He has a very nice way about him so as not to drive pressure or stress. He keeps it cool. And Cool means cool. Not all hot headed and fussy.
Thanks for the vid. I came here as I was looking for bronze brazing in general but watched the whole thing as your teaching skill is as good as your technical skills and are a joy to watch plus the "un-powered demonstrations showing tool motion etc, and moving to the paper for a sketch... an excellent example of why drawing is still a valid means of communication. Thank you.
Thank you Jonathan. Very nice comments. I always have paper and pen handy!
I'm amazed that you don't use a jig. Most people, especially if you are making more than one, use a jig when making parts, let alone integral parts like a frame, especially if you were making one for a motorcycle. Brazing was the first thing I learned to do when it comes to welding, the first thing I did was fix the air injection tubes for my parents' 1989 F150, and then the auto shop teacher's Jerry Can spout, then the next thing I made (and so far the only one I've ever been paid for) was a straight pipe for a friend's gokart. There's so many people making gokarts and little pseudo-dragsters and stuff these days that really don't know how to weld.. I really wish I could make videos doing so and show that even without a MIG or TIG you can still make cool stuff.. Hell in the 30's-70's NO ONE had a TIG in their garage, let alone home shop.. all the classic "rail jobs" and slingshot dragsters were all brazed together and if they could stand up to 1000hp hemis back then, I'm sure sure it's more than strong enough still.
My favorite part about brazing is that if it looks like crap when you're done with the weld, you can just go back over it with the torch and remelt it and focus on getting that nice bead pattern into it with making nice circles with the torch.. When it works right I'd rather leave it for everyone to see than sand it off.
That nickel-silver rod looks more like you're soldering than brazing. The ultimate cheat with brazing is to draw a line on the part with a graphite pencil, the braze won't flow past it.
Where you get the idea that I don't use jigs, I'm not sure. I have lots of jigs and fixtures. Watch the Romax frame building videos. You will see jigs and fixtures for many, many operations.
@@paulbrodie because it wasn't in a jig in this video.. simple as that. I'm a long ways from having watched all your videos.
**Let me add a bit to what I said. Basically because your way of showing how you braze it showed the frame in the holder thing for welding where you can spin it around and flip it over etc. Everything I've ever seen people do they weld it in place in the jig, at least as much as they can reach and then they cut it loose or remove the clamps and flip it over and get to the last places they couldn't reach. It didn't seem like you do that in this video. Obviously now I know I need to watch more videos. Once again I made the mistake that I ASS-U-MEd
@@jaratt85 Yes, I am bad at making assumptions too. I use jigs and fixtures for positioning and tack welding. Sometimes I will do the weld or braze in the jig, but often it comes out and gets held in the Park Stand for brazing...
What a talent! Thank you for sharing!
Thank you very much. Hope your brazing goes well!
I have been welding and brazing since about 1960. Admire your techniques-and teaching skills greatly. You are a teacher for the modern age for young folks (and some of us old fogies).
As you show fillet brazing here, is it customary to use a bead of Nickel Silver to get the real joint strength first and then surround that fillet (whether you grind/sand or not) with normal bronze rod? I am not a bicycle guy at all. But, like you (owing to the motorcycles in the background and having looked at your home page)I grew up brazing in the Nickel Silver Motor cycle era of Cheney's, Rickmans, etc. Then one could find Eutectic 16. I don't see it and have no idea what good Ni rod is today.
Second, for your small brackets where you mention Silver Soldering, are you using something like Harris Safety Silv 56?
I cannot stop watching your vids and are spreading them across the country and to like minded friends overseas. Best of luck with the Aermacchi, equally beautiful work.
Thank you. I like to put a small nickel silver pass on first, then the bronze fillet. Every framebuilder has their own techniques and methods. That's just what works for me. The bicycle world likes "smooth" fillets while the motorcycle guys like the "stack of dimes" look. Each can be very strong. Yes, Harris Safety Silv 45 or 56. And thanks for helping to spread the word!
Thank you for all this content! Best rabbit hole I've gone down in a while. Out of curiosity, what's your rule of thumb/recommendation for regulator pressure while brazing?
A few psi in each.
What a stupendous video! Thank you for sharing all that knowledge. Most artisans hoard that knowledge.
Thank you.
Thanks for sharing your knowledge Paul!!! It's really appreciated.
Thank you for watching!
Great video! I'm looking to get an oxy acetylene setup in the near future start learning. Are the spiral roll and belt sander necessary? Or is it possible to do all this by hand? I imagine it's all possible, just a lot more time consuming/labor intensive. Thanks for the vids!
Thanks. Yes, you can do all the filing by hand but it is a LOT more work!
@@paulbrodie doing the hand work will make someone appreciate doing the torch work more.
@@1pcfred The file up, no matter how you do it, will give you valuable feedback on how your brazing skills are progressing, or not 🙂
@@paulbrodie yeah there's a few things in life like that. Either you get better or you just keep working harder. Which is a great motivation to improve.
Hi Paul, I'm very new to brazing, this video was absolutely great! I feel like I've a lot to learn and a lot to practice. I notice that you don't seem to heat the tubes up so much before adding the bronze, I've heard people say to get it to a cherry-red glow. Can you shed any light on this? What sort of glow should I be looking for before I add the bronze? Many thanks!
Pete
With brazing glasses on it is sometimes very hard to see how hot the metal is. That's where experience comes in. I'm watching the flux: when it gets glassy, or opaque, that's when I start seeing if the brazing rod will melt onto the steel. As soon as the rod starts to adhere (and flow..) that's your cue to start brazing. Hope this helps.
@@paulbrodie thanks for your advice Paul, I'll keep an eye out for this!
You're not even a friend of a welder.
Just a gossip.
Come on mate, what happens to the structure of the steel when it gets to red hot?
Its gone through 7 changes in crystal structures.
So what structure are you going to quench the steel at to fix it ?
Level 3?
Level 5?
Paul just fantastic work and great videos thank you 👍👍👍👍👍👍👍👍👍
I'm like everyone else, I'm here for the torch wisdom and the fillets, but I'm always excited when the Red Sharpie shows up. It's practically as much a member of the shop as the mill. Great recurring character.
Red Sharpie is my friend!