Definition

• Powder Metallurgy.  A process of manufacturing objects by sintered metal. The process produces a very porous surface and unsatisfactory for coins and medals.  See sintered.

  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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