Revomaze Obsession Gripper

This is work in progress!

The Revomaze Grip from ReallyBigTeeth does not fit a Revomaze Obsession, as the Obsession has a round shaft and the normal Revomaze have a five sided shaft.
An M3x50 screw and M3 nut are required to tighten the grip.

This is my first attempt with Fusion360 (I've included a Fusion archive, but do not know, whether this is any help or not...).

The Grip has an outer diameter of ±27.6mm, which gives a circumference of about 18cm(!)
I'm going to glue some graph paper (incl.) cutout onto the circumference, so the grip will help me map the maze (at least that is my hope).

The engineering graph paper was created on customgraph.com, I've added rotation (in 10° intervals) and the draw (10 mm draw on the shaft equals 50 mm on the paper) to the paper.
I've also incl. a polar graph, which I want to glue to the front of the grip.
The polar graph paper comes curtesy from waterproofpaper.com.