Karak Card Holder Cap (for Markans Card Holder)

This cap fits the very nice card holder for Karak from Markan. 

It works nicely in addition to his resin model insert, filling the remaining gap between the model and card holder. 

I Made this on an Prusa MK3 with a gap to the cardholder of 0.1 mm all around. It sticks to the holder even upside down, don't shake it though..