An abrasive sandpaper system having a backing plate (16) with a canted outer periphery (28) and an off-centered aperture (26) for interlocking with lugs (18) of a power driver (12). The sandpaper (30) has a canted outer periphery (38) for riding over raised edges (45) of an uneven wood deck. The backing...http://www.google.se/patents/US7094140?utm_source=gb-gplus-sharePatent US7094140 - Abrasive sanding surface
