Lapping is a machining course of, through which two surfaces are rubbed along with an abrasive between them, by hand motion or utilizing a machine.

This could take two varieties. The primary sort of lapping (historically known as grinding), entails rubbing a brittle materials reminiscent of glass towards a floor reminiscent of iron or glass itself (also referred to as the “lap” or grinding device) with an abrasive reminiscent of aluminum oxide, jeweller’s rouge, optician’s rouge, emery, silicon carbide, diamond, and many others., between them. This produces microscopic conchoidal fractures because the abrasive rolls about between the 2 surfaces and removes materials from each.

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