Coffee grinder interface

I have a hand cranked coffee grinder with ceramic mill. It is a long time to grind a portion of coffee and when you pour in the coffee powder to the filter it spills. The model is a direct interface between the grinder and the bracket handle. It contains an upper and a lower part. After grinding you can lose the thread between the parts and leaving the lower part on the handle you can compress the coffee without spilling.

I have screwed a nut to the shaft of the grinder and use an electric screw driver to turn the mill.

The white ring is a reinforcement of the mills thread.

It is printed from PLA in uprite position. Support is necessary for the bottom part.