Variable Belted Extruder

thingiverse

Belted extruder Gear 3:1 Easy swapable filamentsize by just changing 1 (front) part. Additional parts: 2 pcs ballbearings 695zz: 5x13x4 1 pc screw M5x35 hex-head 1 pc lock nut M5 1 Extruder Driver Gear Wheel 40Teeth 11mm Bore 5mm (MK7 / MK8) ( https://www.banggood.com/de/2Pcs-MK7-MK8-Extruder-Driver-Feeder-Gear-Wheel-40Teeth-11mm-Bore-5mm-For-3D-Printer-p-1036149.html ) 1 pc ballbearing V-nut 623VV (1.75mm filamentsize) 1 pc set screw M3x12 (axis of ballbearing) 1 pc ballbearing V-nut 624VV (2.85mm filamentsize) 1 pc set screw M4x12 (axis of ballbearing) 9 pcs M3x25 2 pcs M3X45 6 pcs square-nut M3 1 pc hex-nut M3 ( locknut ) 4 pcs spring https://www.banggood.com/de/10pcs-Spring-For-3D-Printer-Extruder-Heated-Bed-p-995375.html?rmmds=search 2 pcs bowden coupler M6 ( for 1.75mm filament ) 2 pcs bowden coupler M6 or M10 ( for 2.85mm filament ) 1 pc motor NEMA17 1 pc pulley 20T 1 pc closed belt GT2 200T or 90T project is still a work in progress some parts may change, version for 2.85mm not tested yet. UPDATE Aug 24 2017: Added a smaller mainbody to be used with a 90T gt-2 belt. UPDATE Nov 11 2017 Some major changes on vari_head_285 to mount pushfittings