Website: thingiverse
Author: jim_sab
Price: Free Download
File format: .Stl 3d printable
Description:
An awesome design that works by simply screwing a bearing (same part file) into the center hole of a 5″ gear. The gear will spin freely around the bearing and even mesh with its duplicates. All gears in the photo provided turn with the simple spin of any gear. Please post photos of your makes!