I don't like that there are two ground clamps being used one at each end.
Im glad you mentioned this.....its surprising how many guys aren't aware of this.On another note re welding safety, I really hope EVERYONE knows that chlorinated solvents (e.g. brake cleaner) and welding arcs is a LETHAL cocktail, even the UV radiated (never mind the spark and red/white heat) creates phosgene, a nasty war gas that almost took my grandpa - if you get even a whiff of new-mown grass while welding you probably need immediate medical attention
Dave H. (the other one)