Filament guide tube (smooth feed) Prusa MK3S

thingiverse

On large prints, the head violently yanks on the spool as it makes travel moves. This can't be good for print quality. To resolve this issue, I positioned the filament from the spool to the print head inside a Teflon tube so that the distance between them remains constant. This modification requires only three easy-to-print parts and about 70 cm of 2 mm ID / 4 mm OD Teflon tube (about 5 euros with delivery from eBay). The filament clip can be moved along the frame. I positioned it to minimize strain on the print head, exerting almost no force this way. With this modification, the spool turns slowly and gently, without sudden jerks.