Bearing Filler
thingiverse
Adding some extra heft is an easy way to make your spinner turn for a bit longer without needing to worry about fine-tuning the mechanism. Just throw in a small metal weight and you're good to go.
Download Model from thingiverse
With this file you will be able to print Bearing Filler 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 Bearing Filler.