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MIG welding Aluminum

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Sir Joab

Well-Known Member
Joined
Mar 27, 2010
Messages
47
Location
Arlington, Wa, US
Hey guys,
I'm in the middle of building a 1/2 VW and I need to weld new intake ports on the aluminum heads I cut in half. I have a MIG welder (unfortunately only 120V input) and 100% Argon gas, but on my test pieces I can't even get the welds to "bite". The metal from the wire just beads up on top the piece and doesn't even try to penetrate. I sanded the aluminum to try and get the cleanest surface possible, and I've tried all the power settings, and various gas pressures. The high ones just vaporize the wire all the way back into the tip. I've read all over the internet how to do it, but there's obviously something they're not telling me that I really need to hear...

I would buy a TIG welder, but my pockets aren't deep enough at this time. :depressed
 
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