Drill bits are cutting tools used to remove material to create holes, almost always of circular cross-section.

Drill bit Materials

Titanium nitride coated twist bit
Many different materials are used for or on sharpen bits, depending on the required application. Numerous hard materials, such as carbides, are much more brittle than steel, and are far more subject to breaking, specifically if the drill is not held at a very consistent angle to the workpiece; e.g., when hand-held.Continue reading→