Snap-on Filament Guide (SD4)
This was created to prevent filament from slipping off of the spool and tangling around the PVC on a SD4. It may be able to be adapted to other printers but a 1" diameter PVC pipe is needed and a stand would have to be made.
Note: Haven't made this yet, so if someone makes it please post back with results! I plan on making it after a few prints that need to be done first.
Dims are in mm