A chamfer /ˈʃæm.fər/ or /ˈæm.fər/ 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.

A chamfer with a "lark's tongue" finish

Chamfers are frequently used in machining, carpentry, furniture, concrete formwork, mirrors, and to facilitate assembly of many mechanical engineering designs.

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