Hand Lapper. A hand-held tool for lapping or polishing. The abrasive is formed of emery or diamond. While customarily used for sharpening cutting tools the hand lapper is used by pressmen for polishing or lapping dies occasionally while still on the press.
excerpted with permission from
An Encyclopedia of Coin and Medal Technology
For Artists, Makers, Collectors and Curators
COMPILED AND WRITTEN BY D. WAYNE JOHNSON
Roger W. Burdette, Editor