Ukunyangwa komphezulu yindlela yokwenza umaleko womphezulu owenziweyo onoomatshini abahlukeneyo, bomzimba kunye neempawu zekhemikhali ukusuka kwi-substrate kumphezulu we-substrate, kukucoca, ukutshayela, ukukhupha, ukuthoba, kunye nokuthoba umphezulu we-workpiece surface.
Injongo yonyango lomphezulu kukuhlangabezana nokumelana nokugqwala, ukumelana nokunxiba, ukuhombisa okanye ezinye iimfuno ezikhethekileyo zokusebenza kwemveliso kunye namacandelo omatshini.