This is a Kinetic Extruder Visualizer, should work on most extruder motors.
Tight tolerances, small features, challenging print (use 0.1mm layers and reduce print speeds).
Magnet: 8x3mm print in place, have to insert pause to gcode, before finishing last 3 layers on crank part
Orientation: use your best judgement
Assembly: UPPER & LOWER ARMs assemble in a large circle, then moved into position and secured by FASTENERs… Please watch supplied video*
The author hasn't provided the model origin yet.