Ender & CR-10 Filament Guide with built-in locking PTFE tube coupler

cults3d

I noticed that the filament was digging a larger hole through my extruder block lever because of the angle the filament takes when top mounted, just like many of us have experienced firsthand. This simple yet effective design builds on the idea presented by @The-Doc's guide and incorporates a printable coupler from my extruder block. By locking in a piece of PTFE tube, the guide takes care of the rest. This solution uses stock hardware and works seamlessly with top or side mounted spools.