There are three tool options to consider when drilling large-diameter holes in thick steel: twist drill bits, hole saws and annular cutters. 1. Twist drill bits. Especially in steel thicker than ...

So it’s always a joy to pick up a new trick, especially one as simple as putting a hardened edge on mild steel using a drill bit as a filler rod. This tip comes to us by way of [Jody], aka ...

The episode’s centerpiece was the launch of a large-scale dig in the Money Pit, targeting the fabled Chappell Vault. Treasure hunter Frederick Blair and his drilling operator William Chappell ...