This project is based on a standard bambu filament roll, other rolls will work but the insert and clip may need resizing. 

• In the pictures I only put 8 cups on the model but it can fit up to 10
• Used ball bearings (standard skateboard bearings ~22mm OD, 8mm ID, width 7mm) for smooth rolling. 
  • **Included two inserts one for bearings and another without.
  • The insert without the bearings may not roll as well so just be aware