A hole is nothing. Or more precisely, it’s the absence of something—wood, metal, concrete, or any number of different materials. Since holes are nothing, why do we care about them and how to make them ...

Almost any general-purpose twist bit will do a decent job of drilling holes in metal. In fact, most drill bits labeled specifically for metal are manufactured to drill through various materials, ...

Drilling in its broadest sense is any process that involves making a circular hole in a solid material or hard surface using a boring tool. With thousands of applications across industries, drilling ...