03-12-2011, 05:02 PM | #1 |
Rock Stacker Join Date: Oct 2009 Location: Huntsville
Posts: 77
| brazing
To start off with I have searched and watched the videos. I also know I'm using too soft of solder(plumbers solder). Now the problem, I have got a roll of uncoated brake line from the parts store. This stuff will not solder or weld! I have sanded the joints, solvent cleaned,fluxed, and heated to varying degrees of temp. and the solder just sits on it. With my thumb nail I can scratch it off. I also for giggles went to the garage to weld it and that wouldn't even stick( either burned through or sat on top). Any help would be appreciated. Oh yeah I'm currently using propane for ease of use, I have an oxy/mapp setup also. I just haven't used it because I'm really unfamiliar with torches.
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03-12-2011, 05:24 PM | #2 |
No idea what I'm doing Join Date: Oct 2008 Location: Underground, CO
Posts: 4,529
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I hate brake line. I only use this stuff. |
03-12-2011, 07:49 PM | #3 |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
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If I am not mistaken plumbers solder is only meant to stick to copper lines. I think that is your problem. A friend of mine works in HVAC and he got me my silver solder, they use it occasionally to join copper pipes to steel if the company puts steel fittings on the units. Also, most brake line has some form of coating on it. Some has the green coating and some is galvanized (still silver), either way you have to get that off of there for anything to stick to it. As to why you couldnt weld it, I cant say. What wasnt working about it and what kind of welder do you have? |
03-14-2011, 07:38 PM | #4 |
Rock Stacker Join Date: Oct 2009 Location: Huntsville
Posts: 77
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my welder is a Century 80gl, however, I have hopes to rob off it to get my Lincoln pro-mig 140 up and going. Also I picked up a new solder from TSC today, its called Bernzomatic metal solder, not plumbing solder. Did a quick little test, and seemed to bond ( a whole better than my other stuff) to my brakeline. Ok on the strength, I think. I could pull it apart, however it took a little effort.
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03-14-2011, 09:44 PM | #5 |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
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Do yourself a favor and get some Harris silver solder in 45 or 56 and some of their white flux. Works like a charm, no use trying to put a square pin in a round hole!
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03-15-2011, 06:34 AM | #6 | |
Debunking old stereotypes Join Date: Feb 2006 Location: 1st and Amistad
Posts: 2,260
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You won't pull one of those joints apart. | |
03-15-2011, 08:03 PM | #7 |
Rock Stacker Join Date: Oct 2009 Location: Huntsville
Posts: 77
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watched the vids, however my local welding shop says harris is just a name and they have an equal product. its just gonna cost around $60 for a 3oz spool. They also are suggesting me to use a liquid flux verses the paste, and yes I did tell them what I am doing. Did I get someone that doesn't know what's going on, or is this a process that can be achieve from more than one direction?
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03-15-2011, 08:16 PM | #8 | |
Quarry Creeper Join Date: Feb 2008 Location: Quincy
Posts: 334
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03-15-2011, 08:17 PM | #9 | |
Quarry Creeper Join Date: Feb 2008 Location: Quincy
Posts: 334
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03-15-2011, 09:05 PM | #10 | |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
| Quote:
Im sure there are other silver solders out there that are similar to the Harris stuff just make sure it is a high silver content (at least 45%) and it should be fine. Here is 3T.O. for $85 shipped thats a decent deal (http://cgi.ebay.com/3TO-45-HARRIS-SI...#ht_3982wt_905) They also sell packs with 1T.O. with the correct flux if you can find one of those. I know AirGas carries Harris if you have one locally. Also I think Lincoln bought Harris so they may be selling it as Lincoln now. | |
03-15-2011, 09:29 PM | #11 | |
I wanna be Dave Join Date: Jul 2006 Location: The beautiful Pacific Northwest
Posts: 6,923
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03-15-2011, 09:30 PM | #12 |
I wanna be Dave Join Date: Jul 2006 Location: The beautiful Pacific Northwest
Posts: 6,923
| You can mig weld stainless but the welds will rust.
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03-16-2011, 05:24 AM | #13 |
Quarry Creeper Join Date: Aug 2008 Location: Up your tail kicking footballs!
Posts: 201
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I use the Harris with the flux already on the stick and buy it on a tube of 3 sticks. I have beat the snot out of my brakeline chassis and not as much as a crack. Get the Harris, you can't go wrong.
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03-16-2011, 07:26 PM | #14 |
Rock Crawler Join Date: Jul 2010 Location: St. Albans
Posts: 507
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I brazed for my first time saturday night while drinking a few bears and all I can say is use the Harris Safety Silv 45 and flux and you are golden. Were ever the flux is the brazing rod will flow rite into it and the joints are super strong.
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03-20-2011, 08:33 AM | #15 | |
MODERATOR Join Date: Oct 2010 Location: RC Land
Posts: 3,185
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Did you chop, blend and juice yourself or pick up a six pack locally? Kodiak Ale? or a Grizzly Lager? Next time a good ole beer may be tastier..... although..... I may be wrong, I never had myself a nice cold bear! | |
03-23-2011, 07:58 PM | #16 |
RCC Addict Join Date: Jun 2008 Location: In the woods
Posts: 1,155
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i use harris safety silv 45 solder and stay-silv flux paste and have never had a problem.here is another short vid of me doing a ladder rack on a scaler i just sold. only takes a few seconds.clean it good,apply flux,heat tubing until it gets a little red,apply solder for a cpl secs,remove heat and let it cool,DONE. I use 3/16" brakeline with coating from advanced auto parts and it works good.just gotta clean it good. where ever flux is added the solder will RUN and that is it.you cant hardly break the joint. Last edited by hotrodsonoma; 03-24-2011 at 01:12 AM. |
03-23-2011, 10:27 PM | #17 | |
I wanna be Dave Join Date: Jan 2004 Location: Austin Texas
Posts: 3,866
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1. IF you're building and selling stuff to members buy a vendor star. 2. I can't imagine why you be building crap to sell to people after the mess you just got your self out of what ... like two months ago? 3. Looks like you need a new surface to work on, that shit looks nasty. | |
03-24-2011, 01:16 AM | #18 |
RCC Addict Join Date: Jun 2008 Location: In the woods
Posts: 1,155
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I sold the scale truck.didnt build the rack for someone. and yes sir,it is a cast iron plate I use. |
03-24-2011, 05:38 PM | #19 |
Pebble Pounder Join Date: Sep 2006 Location: charlotte
Posts: 119
| my first brazed cage
i just brazed forr the first time and paid attation to what people said and watched some vids. silver solder 45, silver solder paste, the t4000 kit from home depo like 40bucks helping hands from habor freight. after like the third braze it was really easy thanks to everybods info on this site i made a really cool cage at least i think so. here is a few pics tell me what u think sorry the pics are REALLY BIG |
03-24-2011, 08:14 PM | #20 |
Rock Stacker Join Date: Oct 2009 Location: Huntsville
Posts: 77
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That looks good. I guess I'll have to take the plunge and just order the harris silv.
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