Bộ dẫn Filament cho Prusa

The filament passes through the “eye” which rotates following the filament direction during the print.

You just slide it onto the Prusa MK3S+ frame (it may fit other models with similar frames). It stays there with friction.

I designed this filament guide as an exercice with a moving captive part. I did not have the original idea, I saw some similar designs and built mine from those.

Print it “upside down” to avoid the need for supports.

Note: the spool holder shown in last photo is here.

UPDATE: The fit on the MK3S+ aluminium rail is a bit too lax, you may have to put a strip of paper to get it to stay put.

UPDATE 2: This design relies on good layer adhesion for the strength of the part that clamps to the frame. Use good PETG or stronger filament (I used the orange prusament PETG).

I'd love to see someone print it in 2 colors, with a different tone for the “eye”… Anyone with an MMU ? ;-)