Wheel
Print the two halves of the wheel flat side down, then glue together with superglue. I suggest printing the jig to help with keeping things lined up.
I used PETG with a 0.4mm nozzle and 0.15 layer height, but probs not super sensitive.
Pressure Pad
I Added a file called “pressurething - 15 pack”. These can be used to make replacement pressure pads. Glue a strip of felt to the middle and then cut them apart for 15 pressure pads.
The author marked this model as their own original creation.