Industrial-duty versions of twist drill bits are made from various forms of high-speed steel (such as ... one bit makes a range of holes in sheet metal and metal plate. Each step in the bit ...

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 ...

Whether you're a do-it-yourselfer or local contractor, a durable drill bit set is a necessity. Looking for a new one? Or a ...

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 ...