Variable belted extruder
myminifactory
Belted extruder gear is easy to swap out, requiring just one simple change to the front part. Additional parts needed include two ballbearings (695zz) measuring 5x13x4, one M5x35 hex-head screw, and one M5 lock nut. The MK7/MK8 driver gear wheel has 40 teeth, an 11mm bore, and a 5mm diameter. You'll also need one each of the ballbearing V-nut (623VV for 1.75mm filament size) and set screw (M3x12), as well as another set screw (M4x12) for the 2.85mm filament size. Additionally, you will require nine M3x25 screws, two M3X45 screws, six square-nuts (M3), one hex-nut (M3), and four springs. For filament compatibility, you'll need two bowden couplers (M6) each for 1.75mm and 2.85mm filaments respectively. Finally, a NEMA17 motor, pulley (20T), and closed belt (GT2 90T) are also necessary components.
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