Diamond powder is used as lapping machine consumables which is used for a finishing process. Diamond lapping is appropriate for machining/finishing operations that face challenges such as greater planar, spherical or conical surface requirements. 

The lapping plate is one of the main factors in the lapping process. The surface accuracy and material of the lapping plate are critical. Cast iron lapping plates consist of hard cementite and relatively soft ferrite, making them very beneficial to lapping as they can ease unevenness of abrasive size.

Sic powder is used as lapping machine consumables which is used for a finishing process.

Diamond powder is used as lapping machine consumables which is used for a finishing process.

A lapping machine works by using a fine abrasive material in a slurry form to create a fine scratch pattern on the surface of the workpiece. The workpiece is mounted on a rotating spindle and is brought into contact with a flat surface plate, which is also rotated. The abrasive slurry is applied to the surface plate, and the workpiece is rotated against it, creating a fine scratch pattern on its surface. This process is repeated with finer abrasive materials until the desired surface finish is achieved.