28BYJ-48 Extruder
thingiverse
Inspired by recent discoveries in vlogs and Kickstarter campaigns, I designed an extruder powered by economical stepper motors known as the 28BYJ-48. Notably, one motor was found to be insufficient for the task, but two of them were successfully paired to drive the filament. Assembly video: https://youtu.be/V-Fpiuc5A9Y Required components: 3D-printed parts: "ex28byj-by.stl" (x2) "ex28byj-fila.stl" (x1) Stepper motors: 28BYJ-48 (x2) - apply a bipolar hack to operate them with RAMPS Fasteners: M3 x 10 screws (x8) M3 nuts (x4) M5 x 16 screws (x2) Locknuts M5 (x2) Pneumatic components: Pneumatic pushfit 4mm / M5 thread (x1) Extruder gears: MK8 Extruder Drive Gear 26 tooth copper, 11 x 11 mm (x2) Tension springs: OD 8mm, 14mm (x2)
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