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Brazing metal
Hi,
I need to braze two pieces of aluminum together for a car related enhancement. The problem is I can't braze it in place so it has to be done off the car. Since the two parts are odd ball shapes and angles, I can't clamp them well. Any ideas as to how I can hold them in place while I braze them. By the way the pieces of aluminum are 1/8 in thick and vary in width from 1/2 inch to an inch. Can you use clay? I tried molding crumpled-up tin foil to the two pieces with some success but the pieces still move a bit. |
Jams,
When fabricating non-magnetic materials, I make cardboard or Masonite gussets and/or end plates and hot glue them to the detail parts to hold their position while I make my first tack welds. Then after the assembly is tacked and test fit, I use a heat gun to remove the hot glued pieces. D-cel |
The only problem, which I should have mentioned is that I am using a tortch to braze. The small pieces will get hot enough to ment the hot glue.
Maybe a couple dabs of epoxy or hight temp gasket goo??? |
I hate to pry... what are you building?
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Can you clamp a corner of each piece TO something (like a piece of angle iron, for example) and then clamp or weld those two pieces together or to another piece or to your welding bench? Maybe post a picture?
Lowell |
Aluminum doesn't "braze" as I understand it. You will need to weld the pieces.
Controlled heat is important. Not something I would do if I never did it before. To hold the pieces together, I suggest you jig the pieces or clamp the pieces. Just my $0.02 |
I have seen some nifty little adjustable clamps you can position and hold with. They have them for short money with Harbor Freight I believe. The brazing he is talking about is more of an aluminum soldering process. Harris Welco does a nice product for this that is quite easy to use.
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Orrrrr clamp both pieces to something you can bend to get your position with, a thin piece of stock strip or similar?
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Thanks for your input guys.
I will first look around for some funky clamps. If that doesn't work I guess I will make some kind of jig. Making the jib is the easy part, making sure everything is lined up correctly is the hard part. By the way, here is what I am making... it is a little hard to explain but her it goes. I am making a plate that will fit on the inside of the windshield frame to serve two purposes. One it will allow me to attach my wind wings and 2 it will act as a connection point for a support on my soft top. I want to use aluminum because I can buff and polish it up to have it blend in with the chrome windshield frame. Once it is complete I will see if it makes the grade to stay on the car. Sometimes my thoughts don't always pan out or look good enough! P.S. Yes I am using a type of aluminum solder. |
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