Here's a video showing how the arc gap can affect your weld. You're looking for that Goldilocks Zone. If you're having issues with scummy looking welds and black pepper floating around in the puddle you might be holding too far of a gap!
Handy tool for cleaning inside diameter of tubes and deburring ...quick tip video for making a flap sander from drill rod or round stock
Tips for removing a stuck shaft without damaging the surrounding components.
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