Designed and printed a Schmidt-coupling just to understand how it works.
Watched a video and couldn't figure out how the arms move in relation to the wheels.
So I made one.
I upscale the arms to 104% in PrusaSlicer for looser fit in the pins.
PLA (Prusament Orange)
0,20 QUALITY (Prusa standard setting)
3mm brim on the pins.
Prusa i3Mk3+
Attached the Fusion360 file, a really crappy file just to get it done
The author hasn't provided the model origin yet.