I have a little Lincoln WeldPac with the gas kit. It's done everything I need it to especially sheet metal. When you are MIG welding patch panels, you are going to do it in little spaced spots around the patch, not one big continuous weld.
I watched a guy welding a patch panel in with a MIG and he was actually welding about a 1/4 inch at a time, then putting down the welder and picking up a hammer and dolly and flattening the weld. Then he'd do another small weld about 4 inches away from the first, then he'd hammer that one.
Slowly he worked his way around the patch, eventually filling in between all the little welds.
Anal????
