Butter-smooth filament spool
thingiverse
Similar to Prusa Mendel, this utilizes 608 ball bearings. Check out a YouTube demo here: http://www.youtube.com/watch?v=cpqRnmOveK8. For assembly, thread an 8mm rod through the spool and encase it with printed hubs on both sides. Secure with washers and nuts, then tighten. Experience smooth operation!
Download Model from thingiverse
With this file you will be able to print Butter-smooth filament spool 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 Butter-smooth filament spool.