DIY MMU2+1S

thingiverse

# More info/contact Dedicated Facebook group at https://www.facebook.com/groups/744982719604122/. # Need to print: * the parts in this thing * mmu_idler_block_with_ball_bearing.stl from here https://www.thingiverse.com/thing:3910546 * rear ptfe mount : https://www.thingiverse.com/thing:3652406 # BOM * PTFE 3x4mm (filament roll <-> buffer <-> mmu <-> extruder, I used 7 meters) https://www.aliexpress.com/item/1M-PTFE-Tube-Clear-Teflon-PiPe-to-J-head-hotend-RepRap-Rostock-Bowden-Extruder-Throat-For/32535510253.html?spm=a2g0s.9042311.0.0.27426c374OHBk7 * PTFE fit (PC4-M6 x15 (mmu in, out, splitter)) https://www.aliexpress.com/item/Pneumatic-Connectors-Bowden-Extruder-J-head-Hotend-for-OD-4mm-or-6mm-PTFE-Tube-Quick-Coupler/32809884127.html?spm=a2g0s.9042311.0.0.27426c37G5AlWi * stepper (1.7A x2) : like this one https://www.amazon.fr/gp/product/B06Y4NYJWN/ * coupler 5x5 (1) https://www.aliexpress.com/item/Kande-Bearings-1pc-5x5-5x8-8x8-3D-Printer-Accessories-Aluminum-Couplings-Ship-Model-Couplings-5-5/32869281876.html?spm=a2g0s.9042311.0.0.27426c37nC13mZ * skr mini (1 for mmu) https://www.aliexpress.com/item/BIGTREETECH-SKR-mini-V1-1-32-Bit-Control-Board-ARM-CPU-32Bit-3D-Printer-Parts-TMC2130/33011542798.html?spm=a2g0s.9042311.0.0.27426c37nC13mZ * Clone gear (the one I use) https://www.aliexpress.com/item/5pcs-Filament-Gear-Motor-Gear-Filament-Pulley-For-Prusa-i3-MK2-MK2-5-MK3-Multi-Materials/32956124800.html?spm=a2g0s.9042311.0.0.27426c37nC13mZ * or Gear MK8 (MK8 D) x5 https://www.aliexpress.com/item/MK7-MK8-Extruder-Drive-Gear-Bore-26-36-40-teeth-5-8mm-For-1-75-3/33001874597.html?spm=a2g0s.9042311.0.0.27426c37DT28yh * rod 150mmx5mm (need to cut to the correct size with something like a dremel, 5 of them) https://www.aliexpress.com/item/20pcs-rod-Diameter-4-8mm-Length-100mm-Aluminum-Rod-Machine-Cutting-Tube-Pipe-Aerosol-Plunger-Tubing/33018565453.html?spm=a2g0s.9042311.0.0.27426c374OHBk7 * bearings : 625-ZZ bearings (x10) https://www.aliexpress.com/item/5PCS-Bearing-25X52X15MM-Metal-Roller-Bearings-Housing-Ring-625ZZ-608ZZ/32998314258.html?spm=a2g0s.9042311.0.0.27426c37nC13mZ * spring 15mm (2 for mmu) : https://www.aliexpress.com/item/20pcs-compression-spring-wire-diameter-0-5mm-outer-diameter-4mm-Stainless-Steel-Micro-Small-Compression-spring/33021741010.html?spm=a2g0s.9042311.0.0.27426c37nC13mZ For the MMU board : * tmc2209 (x2) https://www.aliexpress.com/item/Pre-Sale-BIGTREETECH-TMC2209-V1-1-UART-Stepper-Motor-Driver-Stepsticks-Mute-Driver-VS-TMC2208-TMC2130/33028054557.html?spm=a2g0s.9042311.0.0.27426c37OzLD9y * skr mini (1 for mmu) https://www.aliexpress.com/item/BIGTREETECH-SKR-mini-V1-1-32-Bit-Control-Board-ARM-CPU-32Bit-3D-Printer-Parts-TMC2130/33011542798.html?spm=a2g0s.9042311.0.0.27426c37nC13mZ