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 ...

Here’s what you’ll need to get started: Unlike TIG and MIG welding ... it’s at a 10- to 15-degree angle from the workpiece and drag the rod along the weld line, moving in a straight line.