Sink
Sink. To prepare a die from a hub, as a final step of hubbing. A peculiarity of the English language exists for this term: "raise" and "sink" in the connotation of hubbing both mean the same! This sink is intended and desirable. If a die sinks (after long use and wear) it is deteriorating; this is unintended and undesirable. See sunken die.
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