So I've had my TA185 for some time now, and it hasn't got a lot of use simply because I haven't needed to do much with aluminum, and MIG has been more practical for most of my steel projects. I have cut up about a million coupons out of aluminum to practice on, and I'm having some problems. Butt welds are no problem, arc starts nicely, wets out nicely and evenly on both pieces...and then I continue on with my bead.
Here's the problem....every time I try to make a lap joint or TEE joint, I always end up burning away the edge on the top piece of my lap joint, or the upright piece of my TEE joint (horizontal welds). If I focus the arc on the lower piece...nothing much happens...but as soon as I get near the top piece, it just burns away. Thickness of workpiece doesn't seem to make much difference, Although I haven't tried anything thicker than 3/16". I'm doing work on my makeshift welding table....a 3' x 2' piece of 1/4" steel set on top of my workbench. What am I missing here?
BTW...none of these welds are structural, and the only injury possible in the case of a failure is one on my foot from kicking the workpiece across the garage in frustration.
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