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10-17-2012, 04:54 PM | #1 |
Quarry Creeper Join Date: Aug 2011 Location: Sacramento
Posts: 394
| Brass Brazing: Please Help!
So i picked up a pencil torch, brass, solder, and flux. in an attempt to have a whack at brazing, WTF AM I DOING WRONG?!?!?!?!? I watched many tutorials. I tack everything down where i want it, round off the joints, sand it a little, add flux, light the torch, heat for a few seconds, apply solder. Only thing is the solder is not seeping through the joint |
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10-17-2012, 05:09 PM | #2 |
Pebble Pounder Join Date: Dec 2011 Location: Undecited
Posts: 129
| Re: Brass Brazing: Please Help!
I have never! Ever!!!! Been able to do this.....ive asked for tips and hints....tricks and how too's and i still havent had luck! Hopefully you can get the hang of it!
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10-17-2012, 05:29 PM | #3 |
Newbie Join Date: Oct 2011 Location: blairsville
Posts: 22
| Re: Brass Brazing: Please Help!
Do like the guys that build slot cars. Use a soldering iron, flux both prices touch your iron to solder, using a flat tip, and run it across the joint... Do a search for slot car dragsters there's a few lil how to's..if that's all it takes for a 50mph 32nd scale slot car it should work for these little crawlers Side note- slot cars don't use screws on the motor the use the same technique to solder the motor directly to the chassis and they use our same big block motors |
10-17-2012, 05:48 PM | #4 |
Quarry Creeper Join Date: Aug 2011 Location: Sacramento
Posts: 394
| Re: Brass Brazing: Please Help!
i bought this torch so i can braze though. hell i can barley solder connectors on with my shitty $5 solder iron
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10-17-2012, 06:11 PM | #5 |
RCC Addict Join Date: May 2008 Location: Green Bay
Posts: 1,138
| Re: Brass Brazing: Please Help!
Correct solder, correct flux, clean parts well, heat the parts not the solder, that's really all there is to it for brass.
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10-17-2012, 06:15 PM | #6 |
I wanna be Dave Join Date: Feb 2007 Location: South FL
Posts: 3,349
| Re: Brass Brazing: Please Help! |
10-17-2012, 06:18 PM | #7 |
Quarry Creeper Join Date: Aug 2011 Location: Sacramento
Posts: 394
| Re: Brass Brazing: Please Help! |
10-17-2012, 06:24 PM | #8 |
RCC Addict Join Date: Oct 2008 Location: south caki laki again
Posts: 1,695
| Re: Brass Brazing: Please Help!
not getting hot enough, cherry red and the flux should almost disappear, then barely touch the solder to the joint with heat still applied, if everything is right it should suck itself into the joint.
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10-17-2012, 06:25 PM | #9 |
I wanna be Dave Join Date: May 2011 Location: Lost in Oregon
Posts: 4,450
| Re: Brass Brazing: Please Help!
I'm no pro at this but you have to heat both metals until they glow red...and only then do you apply the solder. Other question I would ask is what kind of solder are you using for Brass?
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10-17-2012, 07:13 PM | #10 |
RCC Addict Join Date: Oct 2011 Location: Crawlerado
Posts: 1,582
| Re: Brass Brazing: Please Help!
Get a track power tk950. You can control the temp up to 950 degrees. The solder flows sooooo smoothly into the joints. You can do VERY small areas, and be VERY precise. It's a worthwhile investment. I use mine all the time. Check out the revved shackles I'm building for the brass arse. The are smaller than my smallest fingernail... http://www.amazon.com/gp/aw/d/B0051V...sr=8-1&pi=SL75 Last edited by TheScaleAddict; 10-17-2012 at 07:16 PM. Reason: Added link |
10-17-2012, 07:43 PM | #11 |
I wanna be Dave Join Date: Jun 2007 Location: Canada, eh.
Posts: 2,919
| Re: Brass Brazing: Please Help!
May seem like overkill, but a MAPP torch and silver solder work fine on brass. I've built tubers out of thin walled brass tubing using this and no problem. I also suck at soldering, but brazing is no problem. Go figure.
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10-17-2012, 07:55 PM | #12 |
Rock Crawler Join Date: Oct 2004 Location: The thumb
Posts: 788
| Re: Brass Brazing: Please Help!
Like has been stated above... Lots of heat, hold that torch to it until either you run out of butane or the brass incinerates. If it dont work you'll need a hotter flame, and do more than a "little sanding" Make sure that the two pieces your trying to join look almost like gold. IE... very well sanded. Also I use an 8 dollar micro torch for most of my soldering and use a Weller W100P for the ironing Last edited by MGCrawler; 10-17-2012 at 10:04 PM. |
10-17-2012, 08:31 PM | #13 | |
I wanna be Dave Join Date: Feb 2007 Location: South FL
Posts: 3,349
| Re: Brass Brazing: Please Help! Quote:
Ive done the same for years with copper pipe and electrical wire also i like to heat the bigger thicker gauge metal first then work on the smaller part so you dont risk burning the part. | |
10-17-2012, 10:08 PM | #14 |
Rock Crawler Join Date: Oct 2004 Location: The thumb
Posts: 788
| Re: Brass Brazing: Please Help! |
10-18-2012, 12:40 AM | #15 |
Rock Stacker Join Date: Jun 2010 Location: vancouver bc
Posts: 67
| Re: Brass Brazing: Please Help!
hey there master kyler what flux are you using,if its a non acid core flux that might be apart of the problem.ive read a few dislikes to this stuff from a forum that builds steam engines.personally i use an acid flux and find that this works best.heres a link to how to solder brass that i made awhile ago hope this helps. HOW TO SOLDER BRASS - YouTube |
10-18-2012, 01:30 AM | #16 |
Quarry Creeper Join Date: Aug 2011 Location: Sacramento
Posts: 394
| Re: Brass Brazing: Please Help!
Thanks hillbilly/mudslinger but heating the brass and not the solder was what i was missing. your tutorial was actually my go to video but here is my set up this was the only flux they had at home depot but i will go to my LHS and see if they have any acid flux and here is what i accomplished. its the start of a micro RTI ramp. im sure most of you know what an RTI ramp is seeing how we all crawl here |
10-18-2012, 02:07 AM | #17 |
Rock Crawler Join Date: Jan 2009 Location: Boise
Posts: 604
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To the op I have that same torch and I personally don't think it gets hot enough to use. Thanks for the video link. Sent from my Xoom using Tapatalk 2 |
10-18-2012, 02:33 AM | #18 |
Rock Stacker Join Date: Jun 2010 Location: vancouver bc
Posts: 67
| Re: Brass Brazing: Please Help!
lookin good mastah kyler.glad i could help.
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10-18-2012, 02:42 AM | #19 |
Quarry Creeper Join Date: Aug 2011 Location: Sacramento
Posts: 394
| Re: Brass Brazing: Please Help!
thanks everyone! i will finish the RTI tomorrow @boisetrucker yes it is cheap and not very hot but i did get it to work
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10-18-2012, 08:05 AM | #20 |
I wanna be Dave Join Date: Feb 2007 Location: South FL
Posts: 3,349
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Acid core solder IS best for brass but typical rosin core for electronics seems to work for a most on here. I wonder if there is a benifit to switching to acid core on these small parts. Maybe easier? I don't see it as being worse anyway.
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