Try the Lincoln from home depot,but most emporent, gata have the gas sheld.Not only cleaner, but after your done it won't worp the panels. They even come with a vido tape.Just remember, only weld about 4in. at a time then skip 4 then after your done , go back and fill in the missing 4in. spots.Realy stops the worping. Been making a living welding over 40yrs. Good luck, just remember keep it shiney bright and clean. Paul
