= Polymer shapes SANDING Ad methods of sanding will result in the removal of poaching marks, snd product a matte finish. The cor of hand, palm, random orbit, disc, belt, or forefront sanding. depends dn he entity, tiles aad shapes of the acrylic sheet. Like sanding wood, work From cosset fo foe papers Use light pressure, and Sewn the part or sander roving to avoid heat build up (See Fig. 11).