Method and apparatus for smoothing unfinished surfaces

A device for smoothing unfinished surfaces comprising:

• a variable speed power unit having an arbor and a collet extending from the power unit;
• a mandrel connected to said collet, the mandrel having a drive plate with at least two locking receptacles on one surface of said drive plate and a drive shaft having a threaded recess at one end;
• a sanding head having opposed first and second ends and a through hole extending axially through said sanding head for mounting the sanding head on the drive shaft and forming inner and outer surfaces;
• at least two locking interfaces on said first end for securing the sanding head to the drive plate;
• a shaped abrasive material adhered to and at least partially covering said outer surface;
• and
• a threaded fastener attached to said threaded recess.

A device for smoothing unfinished surfaces comprising:

• a variable speed power unit having an arbor and a collet extending from the power unit;
• a mandrel connected to said collet, said mandrel having a drive plate with a drive shaft having a threaded recess at one end;
• a cylindrical smoothing roller mounted on said drive shaft;
• a threaded fastener secured to said threaded recess;
• and
• a handle attached to the drive shaft by said threaded fastener.

A method for smoothing complex shapes cut into wood or plastic, the method comprising:

• providing a rotational tool having a drive shaft and a drive head containing locking receptacles on one face of said drive head;
• attaching a sanding unit to the drive head with locking flanges on one end of the sanding head;
• forming an abrasive material into a configuration conforming to a desired complex shape;
• adhering the abrasive material to the sanding unit;
• applying the abrasive material to the complex shape;
• and
• attaching a guide bearing to the drive shaft.