This is a remix of just the roller from QIDI 3D X-Plus Spool Roller by mistertech. I've been using his design for awhile, and my spools like to walk and end up on one side or the other of the rollers (they don't fall off or haven't caused any real problems however). This is just a simple remix of his spool roller to add two guides. Most spools should fit between the guides, or with a wide roll or two rolls you can stagger them between the guides. If you already have the originals printed, you could probably get away with just putting one of these on to fence in your spools.
roller_w_guides.stl | 578.6KB |