Sinking
Sinking. Diesinking; creating a die, not by engraving or carving, but by hubbing – pressing a hard steel pattern into a soft steel block. See hubbing.
This experimental medal was made of powder metals and formed by compaction and sintering. It was made for Franklin Mint. It proved the unworthiness of this process for medal manufacture.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