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04-02-2018, 01:37 PM | #1 |
Pebble Pounder Join Date: Feb 2017 Location: Canada
Posts: 104
| Brake line brazing not working at all
I followed instructions and got a maap gas and oxygen brazing torch and silver solder. I scuffed up the surface, applied flux, heated up the steel brake line until it was orange/red. The solder drips off it and will not stick at all. What could I be doing wrong? In the videos I've seen it looks so easy.
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04-02-2018, 01:56 PM | #2 |
Pebble Pounder Join Date: Feb 2017 Location: Canada
Posts: 104
| Re: Brake line brazing not working at all
I think wrong silver material. More research and calling a welding shop has led to silver brazing rod, which melts at higher temp. Okay here we go again.
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04-02-2018, 02:27 PM | #3 | |
I wanna be Dave Join Date: Apr 2010 Location: Oakridge
Posts: 3,305
| Re: Brake line brazing not working at all Quote:
Ernie Last edited by CODYBOY; 04-02-2018 at 04:10 PM. | |
04-02-2018, 05:06 PM | #4 |
I wanna be Dave Join Date: May 2008 Location: Baltimore
Posts: 4,442
| Re: Brake line brazing not working at all
Any filler rod that has Tin in it is sensitive to too much heat, the filler material will basically "boil" and roll off of the tubing. I use silicon-bronze filler rod for brazing tubing but it take oxy-acetylene to get things hot enough to flow the filler.
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04-02-2018, 06:16 PM | #5 | |
I wanna be Dave Join Date: Apr 2013 Location: Streamwood, IL
Posts: 2,442
| Re: Brake line brazing not working at all Quote:
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04-02-2018, 07:47 PM | #6 |
Pebble Pounder Join Date: Feb 2017 Location: Canada
Posts: 104
| Re: Brake line brazing not working at all
so it was the wrong solder. I got bronze brazing rod because that's all they had. Working great now. Hopefully it holds up.
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04-02-2018, 11:41 PM | #7 |
Pebble Pounder Join Date: Feb 2017 Location: Canada
Posts: 104
| Re: Brake line brazing not working at all
Okay that was tough. It's not cleaned up but I'm happy with it especially when I had no idea what I was doing and it took half the day to get the right equipment. Last edited by JoelTGM; 04-02-2018 at 11:51 PM. |
04-03-2018, 05:41 PM | #8 |
I wanna be Dave Join Date: Apr 2013 Location: Streamwood, IL
Posts: 2,442
| Re: Brake line brazing not working at all
It looks very good You did well, and with more practice you'll be building a rock jumper frame in no time!
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04-03-2018, 05:50 PM | #9 |
RCC Addict Join Date: Aug 2008 Location: Paulina
Posts: 1,213
| Re: Brake line brazing not working at all
Yep looks good!
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04-04-2018, 09:42 AM | #10 |
I wanna be Dave Join Date: Jul 2006 Location: The beautiful Pacific Northwest
Posts: 6,923
| Re: Brake line brazing not working at all
Silver solder is much better. You’re overheating the joint if you’re getting it orange hot. If you want to try silver solder again, clean the joint, apply flux, heat until the metal just starts to turn blue and the flux turns to a clear liquid. Pull heat back and feed silver solder into joint. It should wick into the joint. If you get the heat past the blue stage then you burn the flux off and the solder won’t flow into the joint. Don’t give up!
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04-04-2018, 09:49 AM | #11 |
Quarry Creeper Join Date: Apr 2008 Location: Hiding the bodies
Posts: 374
| Re: Brake line brazing not working at all
I second what War Pig said. I would like to add as I saw mentioned above, you need to clean the coating off of the tube. It's not only for good joints, the fumes are pretty damn toxic. I chuck the line up in my drill and run sandpaper up and down until all the coating is gone.
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04-04-2018, 10:42 AM | #12 | |
RCC Addict Join Date: Jan 2012 Location: Vancouver
Posts: 1,921
| Re: Brake line brazing not working at all Quote:
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04-17-2018, 12:24 PM | #13 |
RCC Addict Join Date: Feb 2016 Location: Princeton, North Carolina, USA
Posts: 1,499
| Re: Brake line brazing not working at all
I'm old enough to be able to admit when something has gotten the best of me...brazing has. I can mig weld, which humbles me even further that brazing has eluded me. Would one of you who has mastered the skill be willing to post links to the "right" brazing rod, solder and flux? I tried everything Tractor Supply has to offer after 52 YouTube videos and wound up only with crusty, ashen brake line (uncoated) and fire extinguisher residue on my bench. Please & thank you |
04-17-2018, 01:59 PM | #14 |
RCC Addict Join Date: Jan 2012 Location: Vancouver
Posts: 1,921
| Re: Brake line brazing not working at all
Harris safety-silver soider 56% and the corresponding flux to go with it. And a mapp gas/ oxy or oxy / acetylene Torch set up. Is the going tools and materials people use. Lots on this topic here search brazing www. Rccrawler. Com in Google lots pop up |
04-17-2018, 03:02 PM | #15 | |
RCC Addict Join Date: Feb 2016 Location: Princeton, North Carolina, USA
Posts: 1,499
| Re: Brake line brazing not working at all Quote:
I have the mapp/torch set up (and the burn scars on the bench to prove it)...just need to get the right supplies And yeah, violated Rule #1, search more before asking. Last edited by 2mtech; 04-17-2018 at 03:07 PM. | |
04-17-2018, 04:15 PM | #16 |
RCC Addict Join Date: Jan 2012 Location: Vancouver
Posts: 1,921
| Re: Brake line brazing not working at all
I like to give short answers and a link or search term so one can get more information if they want to.
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04-17-2018, 06:22 PM | #17 |
I wanna be Dave Join Date: Apr 2013 Location: Streamwood, IL
Posts: 2,442
| Re: Brake line brazing not working at all
Go to Airgas.com, there's several locations in your state, https://www.airgas.com/product/Weldi...ng/p/HAR56KPOP |
04-17-2018, 08:25 PM | #18 | |
RCC Addict Join Date: Feb 2016 Location: Princeton, North Carolina, USA
Posts: 1,499
| Re: Brake line brazing not working at all Quote:
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