A simple spool mount which snaps onto the top of a Prusa.
1) Print two of the spool mounts, a bearing* and a filament guide (optional).
2) Snap each spool mount onto the top rails of your Prusa.
3) Use a metal rod to mount the spool between the mounts.
4) Snap the filament guide between the mounts and feed the filament through.
- Check the measurements first to ensure it will fit your spool.