Use this centering die set with your Swanstrom 1-5/8" and 1-1/2" disc cutter set for Bonny Doon presses to make perfectly centered concentric ring (washer) components.
Simply punch a hole in your sheet with a die the size of your desired inner ring diameter. Then move the metal to the larger punch size and use the appropriate centering die to perfectly center the metal. Clamp the metal securely and punch a hole with the punch size of your desired outside ring size. Simple and effective!