Found 2 3D-models for “friction reduction” across many websites

#filament guide#cardboard#Extruder RepRap-Fab#spool#TPU#big booster#noise#filament#Overture#PLA
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Filament guide for extruders cold end

Filament guide for extruders cold end

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Cardboard Spool Silencer / Friction Reducer

Cardboard Spool Silencer / Friction Reducer

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