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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 ...

When building a tool arsenal for at-home or professional use, it's relatively easy to keep the big stuff in mind. The larger, more prominent tools of the trade tend to come first, and if you know ...

A drill bit is what actually cuts into the rock when drilling an oil or gas well. Located at the tip of the drillstring, below the drill collar and the drill pipe, the drill bit is a rotating ...