Lapping is the process of rubbing two surfaces together with a lapping medium (Lapping fluid and Lapping Grit) between them.
Lapping is a low pressure abrading process which is employed as a precision finishing operation tooling to achieve high dimensional accuracy, improve geometrical accuracy, fine surface finish and ensure close fit between mating parts.
Peaks and valleys before lapping
Peaks and valleys before lapping
Peaks and valleys after lapping