Toothwheel
3d_ocean
$4
Gear wheels
...wheels 3docean engine engineering gear gears industry machinery mechanical toothwheel wheel pair of gear wheels :...
thingiverse
free
Laserplotter Laserengraver by froetz
...nema17 steppers 2 stepper drivers 2x belts 4x matching toothwheel ~16x16cm tile of alloy or something similar arduino uno...