Planetary geared bowden extruder
thingiverse
A more or less standard planetary gearbox Bowden type extruder with an access hole for blowing or brushing swarf from the hobbed bolt without having to remove the filament first. This port is an 8mm hole paralell with the filament path and a n 8mm "bottle brush" can be used. This is more or less a work in progress as the grubscrew connecting the filament drive to the gearbox output shaft works loose after about 20 hours - not much good for an extruder designed for the 48 hour jobs Instructions Nema17 with 5:1 planetary gearbox commonly available. Print body and yoke with 25% infill
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