Using a pair of these, we held the plugs in place prior to tack-weld them with our MIG. Gerringer made sure ... we completed our tack welds using a right-angle die grinder and 60-grit Roloc ...

one large MIG machine (with an aluminum spool gun attachment), and two TIG machines. Everything else you might need to complete a project – cutting tools, pedestal and angle grinders, clamps, vises, ...