DDD setting in on the die. The ring starts to rise, then they polish the die and then the area that was raised on the fields and the rising devices, get polished off the die. The more missing, the more times the die was polished:
CoopHome: What causes Ridge Ring on the cent dies?




What causes Ridge Ring on the cent dies?
http://goccf.com/t/412476#3542010
CoopHome: What causes Ridge Ring on the cent dies?




What causes Ridge Ring on the cent dies?
http://goccf.com/t/412476#3542010
Edited by coop
12/08/2021 11:33 am
12/08/2021 11:33 am





















