Aluminum is said to be resistant to the alum as well, but if your busted bit is buried in steel ... bits in brass – clockmakers. It remains to be seen how well it would work for larger drill ...

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 ...

These are robust steel drill bits, good for drilling into wood, plastic or metal. One downside: At high drill speeds, they can overheat and soften, becoming dull. This is especially common when ...

especially if you’re not using drill bits for tile. Attempting to drill tile with a standard steel bit designed for use on wood can cause the bit to overheat, bend, or even break in half.

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 ...