2024-06-18 (Tu) GrinderCompassMKIII REV4 cages

The REV 4 model featured a skeletal bottom solid top for the internal cage. The bottom only had bars so I could pass a feedback mechanism up from the external cage, and the top was thick enough to accommodate a hexagonal nut socket. My calculations for adding the socket were wrong, and I could only fit an M2.5 nut instead of the M3 I had planned. The outer cage was sturdier again, with thicker walls and a larger diameter to make it easier to insert the internal cage.

The biggest problem is that the rubber bands are too tight. The internal cage is held firmly in place with the elastics, but it cannot bounce, as I need feedback.
REV4 cages with yellow rubber band

GitHub files for GrinderCompass
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