Abstract: A wall sanding apparatus includes a plate having a top side, a bottom side, a front edge and a rear edge. An abrasive element for sanding joint compound has an upper surface that is removably attached to the bottom side and has lower surface comprising an abrasive surface. The abrasive element has a forward edge and a rearward edge respectively corresponding to the front edge and rear edge of the plate. The forward edge is adjacent to the front edge and is angled outwardly away and downwardly from the plate such that the forward edge extends forwardly of the front edge. An acute angle is formed at a juncture of the forward edge and the lower surface that is less than 75° and defines an angled edge for sanding corners of wall abutting each other to form angles of less than 180°.