Magnetic Cycloid Gear
thingiverse
If you want to see this working there is a video i did explaining it here https://www.youtube.com/watch?v=QgR1_-QAVlY
Download Model from thingiverse
With this file you will be able to print Magnetic Cycloid Gear with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Magnetic Cycloid Gear.