Cutting tools made of carbide or ceramics are manufactured in the form of inserts which are usually mechanically held in the tool or cutter. They are available in a large variety of materials and shapes and are also called indexable inserts or throw-away inserts. They have multiple cutting edges and generally are not reground.

A fit between mating parts having limits of size so prescribed that an interference always results in assembly.

The production of internal surfaces other than the origination of holes by employing a tool of increasing size teeth that is actuated by pulling or pushing.