Abstract: The present invention relates to an abrading or polishing tool with an improved motor chamber, and more particularly to a tool with a motor chamber having a sleeve or liner lining the inside surface of the motor chamber. In one embodiment, an abrading or polishing tool includes a body defining an internal motor chamber with an inner surface, a liner lining the inner surface of the motor chamber, a rotor contained within the motor chamber for rotation against the liner, and an abrading or polishing head coupled to the rotor for rotation.

Abstract: The present invention relates to an abrading or polishing tool with an improved motor chamber, and more particularly to a tool with a motor chamber having a sleeve or liner lining the inside surface of the motor chamber. In one embodiment, an abrading or polishing tool includes a body defining an internal motor chamber with an inner surface, a liner lining the inner surface of the motor chamber, a rotor contained within the motor chamber for rotation against the liner, and an abrading or polishing head coupled to the rotor for rotation.

Abstract: A contoured interface pad for use between a base of an abrasive finishing device and an abrasive sheet is disclosed. The contoured interface pad has a body with a first and second opposed major side. The first side is positionable against the base of the abrasive finishing device while the second side is capable of receiving the abrasive sheet. The second side has a first surface portion that protrudes relative to a second surface portion, causing the abrasive sheet to conform to an irregular surface of a workpiece. The first side may be releasably attachable to the base of the abrasive finishing device and the second side may be releasably attachable to the abrasive sheet. The body may be sufficiently resilient to allow the body to deform and return to an original shape. The first and second side may be releasably attachable through a hook and loop fastener system.