Shield Arc
Super Member
Never heard that before!:thumbsup:Another trick I know for softening it, this reminded me of, is to chuck a finishing nail, head down in a drill press. Just turn it on, and hold the nail onto the work. The friction will heat up the spot, and when it cools, it will be soft enough to drill into. Just leaves a little heat effected zone, like a spot weld.
And I've been around the block a time or two.:laughing: