Gears are cool!

I'd seen a few axis visualisers and such like in the shape of “gears”, but most of them were artists impressions of gears (rectangles or trapeziums stuck on the outside of a circle) rather than proper involute (or cycloidal) form gears and that sort of thing irritates me, so  I thought I'd design my own.

I've made a set to include a control knob and visualisers for X, E and Z axes.  All are module 2 gears.  You can see them all in the last photo.  This is the control knob, of which there are two variants.  The smaller one is slightly lower profile and has 10 teeth (matching the Z-axis visualisers).  The larger one has 18 teeth (and matches the E-axis and X-axis visualisers).  Both knobs allow easy access to the reset button if required.

Links to all the gears are here:

• Collection: https://www.prusaprinters.org/social/187908-dral/collections/106521
• Extruder Visualiser: https://www.prusaprinters.org/prints/117065-involute-gear-extruder-visualiser-for-mk3s
• X-Axis Visualiser: https://www.prusaprinters.org/prints/117066-involute-gear-x-axis-visualiser-for-mk3s
• Z-Axis Visualiser: https://www.prusaprinters.org/prints/117069-involute-gear-z-axis-visualisers-for-mk3s
• Control Knobs: https://www.prusaprinters.org/prints/117060-involute-gear-control-knobs-for-mk3s

There's a video of the visualisers working here: