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Alu, Back up Material
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i found, in one case, that a large piece of uncleaned and well weathered aluminum worked great.
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I think a carbon backing plate would work well for you. You can order custom sizes of carbon blocks from ARCAIR . You can call or email and tell them what you are doing. They can make several different sizes to fit your application. I had one made 1/2" thick and 1 foot square. It works well for GTAW. I also use it to back holes in 1/2" steel when filling them in with a MIG torch.
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I too would probably tig those parts. I believe HAWK mentioned carbon is a great backing plate. You might give that a try.
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I would use the Dynasty for that job. What joint? I have used some stainless before. That worked out pretty good. I have 4 or 5 blocks of 2x2x3 taht I use for chill blocks on aluminum.
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Alu, Back up Material
I have 100 pieces that are .200" thick and about 5/8" long to weld up on the edge. Is there a material that alumimum will do stick too or burn up during this process? I will be using my 15A spool gun and a MM251
Thanks
JimTags: None
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