Centre lathe turning operations - Chamfering
 
Chamfering: Chamfering is the operation of bevelling the extreme end of the work piece. The form tool used for taper turning may be used for this purpose. Chamfering is an essential operation after thread cutting so that the nut may pass freely on the threaded work piece.

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. Chamfers may be formed in either inside or outside adjoining faces.

Chamfers also acts as a lead when fitting components such as bearings on a shaft.

 

Videos

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Brass bush with internal shamfer