double hobbed Extruder for 3mm Filament
thingiverse
I upgraded my direct driven printer to a 3mm Bowden setup, but the added friction from the PTFE tube caused my filament grinding to skyrocket. To solve this issue, I designed an extruder with two hobbed bolts and a unique profile on each bolt's "hobbs". This innovative design eliminated my filament grinding problems altogether. You'll need: 6 x Bearing 608 1 x Bearing 6000 Various M4 screws Several headless M3 screws Printer Settings: - Printer: Homemade - Rafts: Doesn't Matter - Supports: No - Resolution: 0.2
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