Honing

The process of finishing ground surfaces to a high degree of accuracy and smoothness with abrasive blocks applied to the surface under a light controlled pressure and with a combination of rotary and reciprocating motions.

Photograph courtesy of Draper.co.uk
One surface that requires particular attention is the cylinder bore.

Honing Stone

A tool used for the final smoothing operation.

Roughing Stone

A coarse stone used for quick removal of material during honing.

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Subjects: Mechanical Engineering