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 ...

Breaking a stud or a bolt is a pretty common shop catastrophe ... will dissolve the steel drill bit without reacting with the brass. Aluminum is said to be resistant to the alum as well, but ...

Irwin 29-Piece Cobalt Alloy Steel M35 Drill Bit Set ↓ Jump to Review Before deciding to purchase a set of cobalt drill bits ...