How to Make a Pivot Polisher by Robert Porter

This simple, easy to make and inexpensive attachment is used to grind and polish pivots, and micro drill work. Instructions cover: laps, measurements for the base plate and spindle guide block and motor slide; spindle location, assembly; making a lap spindle, truing, helpful advise on lapping; micro drilling; making spade drills; sharpening drills; making a spindle for micro drills; motor modification for faster speed. Plus, a supplier parts list. 38 black & white close up photos and detailed diagrams. 25 pages. Size is 5-1/2″ x 8-1/2″. Soft Cover.