Anycubic i3 Mega-S filament guide
thingiverse
Altered the dimensions to better fit the frame of the Mega-S. Added a corner relief and a lead-in on either end for the frame corners. Infill doesn't seem to matter too much, especially if you add more walls. **UPDATE** It might be a bit too long on the side with the loop but works ok. I recommend sanding/filing the guide loop as mine seems to rub against the filament. I also adapted an Ender 3 filament guide that uses a 608 (or printed) bearing that works much better. Also fixed the length a little. Design might not accommodate the filament sensor as-is but I don't use mine at the moment. https://www.thingiverse.com/thing:5232012
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