Great tip. I never tried it with stick, but will keep in mind. A good buddy taught me how to do it with mig: Put a nut over the broken bolt and place the mig gun on the nut, then while holding the nut down with the MIG nozzle, start welding. Fill the nut and when it cools, use a wrench to remove. I think it works so well because the heat and the current are flowing down thru the threads which breaks the rust etc.