This project has been inspired by the work of the @Ryper3D in fact many of their parts has been used on this project because of that I would like to give to them the Kudos that they deserve. If you want to know about their work please visit their printables profile
The aim of this project is to deliver the posibility to use up to 10 different colors on a printer without spend too much money on the way to achive it. If you already own an MMU2/3 unit you will have to spend less than 65€
Important
Is necessary to exchange the Pulley and Idler motor, so the idler motor will be used with for the pulleys in combination of a 5mmx175mm flat shaft and a rigid coupler of 5mm-5mm
| Item | Quantity | Link | Aprox. price |
|---|---|---|---|
| 190mm leadscrew T8 M8 | 1 | 5€ | |
| 218.5mm smooth rod M5 | 2 | 7€ | |
| Nema 17 | 1 | 11€ | |
| 685-2rs bearings | 10 | 6€ | |
| 175mm flat shaft M5 | 1 | 3dBoom | 8€ |
| Rigid coupler 5mm-5mm | 1 | 1.5€ | |
| Flex coupler 8mm-5mm | 1 | 1.5€ | |
| Shaft 16mm OD5mm | 10 | 4€ | |
| GT2 20T Bore 5mm | 1 | 1.5€ | |
| ECAS | 10 | 4€ | |
| Filament pulley | 5 | 12.3€ | |
| SHCS M3x35mm | 3 | 0.3€ |
Basically you will need to follow the assembly guide released by Prusa and apply a little bit of common sense. Is more or less the same
- The firmware for the MMU3-10C unit is released on the repository CM3D-Firmware-MMU
- The firmware for the MK3S+ is released on the repository CM3D-Prusa-Firmware
Note
All this pictures have been take from my development printer and the pulley body is based on a previous version
Well, it just works in the same way than the MMU3 from @prusa3d but with the possibility of use the double of colors.
