Prusa I3 Direct Drive Extruder 3mm
thingiverse
Direct Drive Extruder for the Prusa i3, made specifically for 3mm filament using the Prometheus hotend. Alternative hotends will also work if the hotend holder is modified; another version of the hotend holder might be uploaded if enough interest in a specific hotend exists. Mounting a stepper motor directly to the extruder is technically possible but I strongly recommend purchasing a geared stepper motor for additional force; links for the required parts are provided below, including the geared stepper motor. The idler features a 624ZZ bearing and a 4mm bolt along with its nut. Tensioners consist of two 3x50mm bolts with nuts, accompanied by four washers, requiring two springs. The geared stepper motor necessitates an 8mm bore MK7 drive gear. The motor is attached to the extruder using four 3mm bolts while the extruder itself is attached to the hotend holder via two 4mm bolts and nuts. Parts required are listed below: - Geared stepper motor: http://www.robotdigg.com/product/425 - MK7 drive gear - 8mm bore: http://www.aliexpress.com/item/MK7-Bore-8mm-Extruder-Drive-Gear-For-3mm-Hobbed-Gear-For-Makerbot-Reprap-Mendel-High-Quality/32462285369.html Print Settings: Printer Brand: RepRap Printer Model: Prusa I3 Raft Generation: No Support Generation: No
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