Brazing ? How the heck ????

[elimin8or23]

Hello.

I am wanting to build my own tube chassis and was wondering if there is a guide on how to "braize" floating around:?: I have never welded or braized before. I have built slot car chassis before with a soldering iorn, piano wire, and 60/40 tin solder.

Any info or help would be greatly appreciated. Maybe someone could create the "perfect" guide on this and get placed into history as a sticky....OK. That was a little out there, but it would help me!

Thanks,
Tony
elimin8or23

 

[TwistedCreations]

http://www.rccrawler.com/tuber.htm

 

[joecrawler]

Also it will help alot to get a good flow to get the metal as hot as possible.

 

['83 chevy]

Also it will help alot to get a good flow to get the metal as hot as possible.

but if its too hot the braze will just shoot off of the metal, and not stick

 

[roktoy]

[QUOTE='83 chevy]but if its too hot the braze will just shoot off of the metal, and not stick[/QUOTE]

Yes, there is an optimal heat range that works best. Make it too hot and the braze material can get very thin (sometimes good, sometimes not) and you can burn the flux and then you'll have flow problems. You don't want it as hot as possible.
Jay

 

[Rat1]

You will want to get yourself a Mapp and Oxy torchset and a product called Harris Safety Silv 56. Get the kit with the flux and coiled wire.

 

[TwistedCreations]

yes as others said, you do not need to get it too hot. Also, no need to get the mapp and oxy kit. Mapp works just fine. It helps on thicker materials though, so you not standing there all day.. Although, the oxy. tanks do not last long

 

['83 chevy]

yes as others said, you do not need to get it too hot. Also, no need to get the mapp and oxy kit. Mapp works just fine. It helps on thicker materials though, so you not standing there all day.. Although, the oxy. tanks do not last long

they do when you use 80lb tanks;-) , i have always used a cutting torch with a brazing tip. i can braze anything with this setup

 

[Crawln Coles]

I just learned how to braze myself. Two almost done tubers and a few practice pieces is all I ever brazed. I just searched and read all the info on here. I use a mapp torch and regular 1/8" brazing rod. I couldn't find that Harris stuff anywhere, and all the hardware store guys looked at me like I was crazy when I asked for it. Guess I need to go to a welding supply shop!?

Well anyway e23 just get yourself a torch, brazing rod some metal and have at it. It's sorta like soldering, just a little hotter! Start off with some scrap pieces. Becaused it's just like anything else, the more you do the better you get. Well have fun and good luck. "thumbsup"

Here's a two tubers I brazed:
http://www.rccrawler.com/forum/showthread.php?t=51952
http://www.rccrawler.com/forum/showthread.php?t=57770

 

[funkranger]

Practice, practice, practice thats what worked best for me "thumbsup"

 

[TwistedCreations]

[QUOTE='83 chevy]they do when you use 80lb tanks;-) , i have always used a cutting torch with a brazing tip. i can braze anything with this setup[/QUOTE]

So if you use cutting torches w/ 80lb tanks,sounds like you have oxy/act. setup... not oxy/mapp

 

[elimin8or23]

Thanks for all of the great FAST responses on this. I am going to go tonight and get some material to practice with and hopfully start building a chassis by the end of this month!

Thanks again!
"thumbsup"

 

[Manwhalo]

Here is what worked best for me:
I used map gas and Harris safety silv 56.
Get the area you want to braze clean and then coat it with flux. Hold the flame on it until the flux starts to bubble then start feeding brazing rod. (it doesn't take much). If I got it too hot, the safety silv would just run off and end up on the bench.
I don't know if this is the best way but it is what worked for me.

 

['83 chevy]

So if you use cutting torches w/ 80lb tanks,sounds like you have oxy/act. setup... not oxy/mapp

ya your right:lol: