Floating or Levitating Transmission
thingiverse
for inf in case you want to make more cogs roller diameter = 5mm, pitch = 11mm, roller width = 6mm you can find the video at https://youtu.be/MMKDw4y_PuI bearings are 4 x 22mmOD 8mm ID and 7mm thick - skater bearings the bar is 8mm steel
Download Model from thingiverse
With this file you will be able to print Floating or Levitating Transmission 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 Floating or Levitating Transmission.