A chamfer or is a transitional edge between two faces of an object. Sometimes defined as a form of bevel, it is often created at a 45° angle between two adjoining right-angled faces.

What is the purpose of a chamfer?

Machinists use chamfers to "ease" otherwise sharp edges, both for safety and to prevent damage to the edges. A "chamfer" may sometimes be regarded as a type of "bevel", and the terms are often used interchangeably.

How do you define a chamfer?

a cut that is made in wood or some other material, usually at a 45° angle to the adjacent principal faces. Compare bevel.