triple gear Extruder with NEMA 14 (V2.0)
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Summary RepRap extruder with NEMA 14 step motor. It's super lightweight and ridiculously affordable to build. My actual step motor is only 25mm deep, which is super tiny, and I just print one job at a blistering 150m/s (Marlin config: 1881 steps per unit mm). You'll need: 3 bearings measuring 16x8x5 (Block/filament gripper) 2 bearings measuring 8x3x4 (middle gear) heat sink if using an extremely small motor, since mine starts skipping at a scorching 65 C and some nuts/bolts https://youtu.be/BVO7R3UbIoM Gear configuration copied from: Paste Extruder - 10 cc V2.1 - Extrudeuse à pâte by Shapescribe, published Dec 14, 2014 http://www.thingiverse.com/thing:591849
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