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 X-axis visualiser and has 18 teeth (matching the E-axis visualiser and larger control knob).  It has some “teeth” on the back that engage with the pulley and hold it in place.  I've included a magnetically mounted version in case you'd prefer that (it still has the teeth on the back for alignment), but the friction fit one seems better to me.

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: