removing surface layers from an ingot, billet, slab, bar stock, or tubing by drawing it through a sharp-edged die to remove a thin surface layer containing minor defects, pindmiste, defektsete materjalikihtide eemaldus valoplokilt, valtstoorikult, slääbilt, valtstootelt (sh torud) tõmmates neid läbi teravaservalise matriitsi