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 ...

There are three tool options to consider when drilling large-diameter holes in thick steel: twist drill bits, hole saws and ... “Twist drills remove all the metal from the inside of a hole ...

But when a drill bit breaks off flush in a hole, there aren’t a lot of options, especially for a small bit. If the stars align, though, you may follow this video guide to dissolve the drill bit ...