Ender-3 Filament Guide
thingiverse
I made just two straightforward adjustments. I shortened the holder so I could put it in place without having to unmount half the printer, and I added some extra space for the brass screw nut. On the 3D model, I had to use a cutter to enlarge the hole when mounting this piece because I had added a little space for the screw after that. If you try printing this model and encounter any issues, please let me know. [EDIT] The thin plastic that holds the filament in the inlet is wearing out. I've uploaded a second version with thicker material.
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