Diamond core drills are primarily rented by mechanical and utility contractors, plumbers and stone masons for drilling holes in walls, ceilings, floors and roads. They can be a small but important ...

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 ...

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 ...