Involute Gear Z-Axis Visualisers for MK3S

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 Z-axis visualiser and has 10 teeth (matching the smaller control knob).  It is printed in two parts, which clip together over the Z-axis lead screw (so you don't have to dismantle the printer to fit the gears).  I'd recommend clipping them together away from the lead screw to make sure the clip features go together okay: if there are some minor print artefacts the first time you clip them together should clean them up.  Note that the two halves are different to one another so it's important to pair them up properly if you print both visualisers.

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: