Lock your work down with shop-made hold-fasts
To make your own, first cut the head off a 3⁄4 ×8" grade-5 bolt using a hacksaw. Bend 1⁄4"-thick hot-rolled steel barstock to match the pattern shown bottom of illustration. Drill a 13⁄16 " hole in one end of the barstock and slide it onto the bolt, locking it in place with the nuts. Make half a dozen; you'll be surprised just how handy they are.
—Ray Elashewich, Winchester, Va.