Définition

• Mask, Masking.  A protective covering, either solid (as a jig), or liquid (as a stop-off lacquer), which is used to protect a portion of a metallic surface for a temporary period of time while some operation is being applied to the unprotected surface. Often used in the finishing department for a variety of techniques, including:  partial platings, multicoloring techniques or mixed media finishes; this occurs where two or more treatments are required on one surface of a medallic item. Afterwards the mask is removed or stripped off exposing the protected surface.  See finish and finishing, jib, partial plating, stop-off lacquer.

  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

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