[lintmann]

I was wondering if anyone is proficient in welding sheet metal overhead with a MIG? I need to weld in a few patches and as luck would have it, I'll have to do it upside down. I'm pretty new with the MIG but have horizontal welding pretty much figured out with fairly nice flat welds and full penetration.

I have a Lincoln 140 and I'm using .023" wire and an argon CO2 mix. Any set-up procedures or tips are appreciated. Thanks!