hammasrataste viimistlusmeetod, mida teostatakse töödeldava hammasratta hambumises peamiselt malmist hammasrattaga, kasutades plankimispastat (vt plankimine; vrd hammasratta pindsilumine), a finishing operation of gears involving a cast iron tool (other metals are sometimes substituted), and the cutting action is accomplished by the lapping compound containing abrasives (see: lapping; compare: gear burnishing)