This model is based on the eccentric cycloidal drive.

for this model you would need:

4x 608 bearings(the same ones that are in fidget spinners and skate board wheels).

2x m3 screws that are no more than 30mm long.

and all 5 of the printed files.

To assemble the model you would first need to cut the extra material that is on the inside of the big gear, then press the bearings into the big gear and into the frame parts.

after that you need to put the knob and pinion part into the frame (be aware that the pinion and the big gear can only be fitted together in one orientation, if you are having trouble getting both of them to mesh and fit, try flipping the big gear).

 finally, you can connect both of the frame sides, push the pinion supporting plug into the last empty bearing and screw in the screws.