Question to all the welders out there!!!

Another variable to consider is the thickness of the wire. For thin sheet metal, thinner wire allows you to put less heat into the metal. I've had good luck with .023" wire for auto body work.

Also, don't try to weld a continuous bead. A series of small stitch welds less than 1/4" is what you want. Lay one, then move to another part of the repair and lay another. Come back and fill in the gaps allowing time for the metal to cool. This will help prevent the metal from warping.