Oh, sure – when you buy a new set of drill bits from ... useful to have some sort of gauge to measure them. [Caspar] has the solution, and all you need is an old steel rule.

Like twist bits, hole saws chuck right into your drill and will cut through thin-gauge sheet metals like aluminum and steel.

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 ...