Sanding devices for sanding a workpiece

A sanding device for sanding a workpiece, the sanding device comprising:

• a sanding block including:
• a triangular block having a triangular base;
• and
• a rectangular block having a rectangular base, the rectangular block being affixed to a side surface of the triangular block,
• wherein the sanding block includes sanding block base surfaces having the triangular base abutting the rectangular base along a straight edge, the sanding block base surfaces being an abrasive surface and an engagement surface opposite the abrasive surface, and
• wherein the engagement surface includes a hand-shaped recess extending from the engagement surface towards the abrasive surface, and
• wherein the hand-shaped recess includes a thumb-shaped recess in the triangular base of the engagement surface and at least one non-thumb-shaped recess in the rectangular base of the engagement surface, and
• wherein side surfaces of the triangular block and side surfaces of the rectangular block are abrasive.