Spacer for vintage Mont blanc ballpoint pen

My grandfather's old Mont blanc ballpoint pen came with the longer “Riesenmiene”. Current refills are a litte shorter than this giant refill. To use current refill, you need to putt an adapter at the end of the refill. In the past you got such adapter together with new refills… If you do not have one on hand, you can print one, now.

Print slowly - the contact surface between bed and part is very limited. To ensure the tiny details are printed, I used a very narrow layer height…