United StatesOriginal Prusa i3 MMU2S upgrade kit (for MK2.5 & MK3S/+)
Multi Material Upgrade 2S (MMU2S) is a brand new and improved version of the Multi Material Upgrade 2.0 - our unique multi-material addon, which enables your 3D printer to print with up to 5 colors at the same time. With an easier calibration process, a new filament sensor, and a standalone filament buffer, the MMU2S is more reliable than ever before.
This product is supplied as a kit - you must assemble it by yourself!
Please note, the assembly manual for the MMU2S upgrade kit is available in digital form only.
Note for MK3 users, you also need to purchase the MK3/S to MK3S+ upgrade kit with the MMU2S.
Multi Material Upgrade 2S (MMU2S) is a brand new and improved version of the Multi Material Upgrade 2.0. With an easier calibration process, a new filament sensor, and a standalone filament buffer, the MMU2S is more reliable than ever before.
WITH THE ORIGINAL PRUSA MMU2S WE ARE INTRODUCING:
NEW FILAMENT SENSOR
With the MMU2S we managed to sense not only that the filament is present, but that it actually reached the Bondtech gears. The filament sensor detects when the idler doors open a bit as the filament pushes Bondtechs apart. MMU2S is much more reliable regarding reloading filaments and the calibration process is also simplified.
FILAMENT BUFFER
The MMU2S comes with the filament buffer, a device designed to prevent filament tangling during loading / unloading process. The buffer allows you to position the five filament spools more freely and also saves valuable space on your desk.
THOROUGHLY TESTED
The testing process of the MMU2S took 2 months to finish, we used 20 printers and we printed 478 test blocks designed to test frequent switching of all five filaments. The total value of filament changes was nearly 600.000. More than 93 % of this prints were successfully completed.
Multi Material Upgrade 2S (MMU2S) is the second generation of our unique multi-material addon, which enables your Original Prusa i3 MK2.5S or MK3S/+ 3D printer to print with up to 5 filaments at the same time. Compared to MMU1, the new MMU2S went through a major revision, resulting in a simpler and more reliable design. The number of simultaneously supported filaments increased to a total of five, which enables the users to print even more complex and more colorful objects. MMU2S comes with a redesigned body and a new filament loading mechanism. Instead of the previous Bowden system, the new unit uses a direct-drive feed and a single PTFE tube to lead the selected filament to the extruder. The motorized selector head has a F.I.N.D.A filament sensor and a built-in blade, which prevents filament jamming. Read more about MMU2S in the announcement blog post at Prusaprinters.org and in this upgrade article.
SEE THE MMU2S IN ACTION!
Introducing MMU2S
How does MMU2S work?
MAIN FEATURES
The most significant new features of Original Prusa i3 MMU2S
COMPLETELY REDESIGNED
MMU2S has a brand new body with a rotating pulley barrel and a single extruder motor. Load up to 5 filaments and the selector head with a filament-cutting blade will take care of automatic loading and unloading.
FIVE MATERIALS
The second generation of our Multi Material Upgrade supports up to 5 filaments loaded at the same time. Apart from usual materials like ABS, PETG or PLA, the MMU 2.0 also works great with soluble supports (BVOH or PVA).
DIRECT DRIVE
We have replaced the previous generation's Bowden system with a new direct-drive mechanism. This change is a major step forward in making the filament loading process more reliable and less prone to jamming.
F.I.N.D.A FILAMENT SENSOR
Meet F.I.N.D.A! It's essentialy a repurposed P.I.N.D.A probe, which now serves as a filament sensor. It works on a mechanical basis - the string of filament lifts a small stainless steel ball and F.I.N.D.A detects its proximity.
WIPE INTO INFILL / OBJECT
Our slicing software Slic3r PE comes with full MMU 2.0 support and a set of useful features, such as Smart wipe tower, Wipe into infill or Wipe into object. These features help you save time and filament.
FILAMENT BUFFER INCLUDED
The MMU2S comes with the Filament Buffer, a device designed to prevent filament tangling during loading / unloading process. The buffer allows you to position the five filament spools more freely and also saves valuable space on your desk.
FULL FEATURES LIST
MULTI MATERIAL UPGRADE 2S FEATURES
COMPATIBILITY INFORMATION
Printer Compatibility: Material Compatibility:
Reviews
Dreadful. Absolutely dreadful. My mk3s is a superb printer and was the best of the 4 I own. However, this MMU2 has turned it into an unreliable and often unusable printer. The MMU2 really is a piece of junk that after 14 months of attempting to get it to work reliably, I REALLY wish i had never purchased. I feel completely ripped off Prusa should not be selling this - a simple web search will quickly reveal it is not fit for purpose
I really can't say enough good things about the MMU. Take your time assembling it. Pay attention to the details. Make sure your tubes are cut flat and don't over tighten things. I assembled mine over a year ago and other than an occasional string getting caught up in the PINDA sensor it works like a champ and allows me to offer multi-color or multi-material prints to my customers for items like door plaques, Christmas ornaments, and more.
I'd love to pay $50 more for a semi-assembled unit: I have more 20 minutes trying to install the second bearing!!!!
