Remix of stamp holder by negativenine. This just added a vee centered on the holder for stamping round bars. It is large enough for registering on a 3inch round bar. The practical issue in application for round steel bars is that you have to hit quite hard to make a full impression on a round bar with a flat stamp. Instead of using this device, we developed a rolling and tapping technique with dotmatrix low stress stamps. This device won't allow rolling.

Happy with the quality of the print although a bit too tight on the stamps. I used Fusion 360 to remix.