RocketBook friction-based Frixion pen holder

A snap pen-holder for the RocketBook I just received in the mail. Did not contain a pen-holder. Now it does. Designed to fit the stock Frixion pen (clicker 07) which is the only example I had access to. May not fit other Frixion pens. Who knows, you tell me?

It can be put in the back of the spine while closed or between two open pages when the notebook is open. By flattening the back, it allows the pages to move freely.

I tried to evoke some star ship lines with the fillet and chamfer tools since the design reminded me of Star Trek a little bit.

The gcode has brim and is oriented for printing in the classic rocket ship pose.