Knife Edge, Knife Rim
Knife Edge, Knife Rim. A burr or fin where metal flows between the die and the collar in a coining press where the pressure is too great, or the blank is too large. These are British terms for what Americans would call a wire edge. The fin is thin and sharp like a knife hence the name. See burr, fin; compare flash.
excerpted with permission from
For Artists, Makers, Collectors and Curators
COMPILED AND WRITTEN BY D. WAYNE JOHNSON
Roger W. Burdette, Editor