Original Prusa MMU3

The Original Prusa Multi Material Upgrade 3 (MMU3) is our latest solution for printing with up to five filaments at the same time using a single nozzle and with high speed and low waste. As a smart add-on for the Original Prusa 3D printer, it enables automatic switching between loaded materials. MMU3 is fully supported in PrusaSlicer by an easy Multimaterial painting tool, and it offers efficient and filament-saving color printing to everybody.What is MMU3?Its exactly what it sounds likean optional add-on that enhances your single-extruder printer so it can print with up to five colors simultaneously.The Prusa MMU3 is the fastest single-nozzle multi-material solution available, delivering excellent quality with minimal waste.The MMU3 contains five filament insertion points. Load up to five colors of your choice, slice the object in PrusaSlicer, and start the print. The system automatically selects filament using the selector, loads it into the extruder and the printer starts printing. Based on your project settings, the MMU3 unit will automatically select the right material, and feed it into the nozzle. When a material change is needed, the MMU3 unloads the current filament, purges the nozzle with minimal waste, loads the new filament, and continues printing. You can also use the MMU3 to set up color changes at specific layers, with the unit handling color switching automatically. All you need to do is remove the finished model from the print sheet.Model: Melting Rubiks Cube by Malte.Designed for seamless operation and intuitive troubleshooting, the MMU3 offers the best user experiencethe only more advanced solution in this category is the Original Prusa XL, which features up to five independent print heads.FASTEST SINGLE-NOZZLE MMU PRINTINGThanks to itsfine-tuned firmwareandsmart design,the MMU3 deliversextra-fast filament changes,averaging between 35 and 45 seconds. A single multi-material print can involve thousands of filament changes, so every second saved adds upcutting total print time by hours.EFFICIENT MULTI-COLOR PRINTINGEvery time you switch filaments, you need to purge the previous material from the nozzle to prevent color contamination. The MMU3 features a smart nozzle cleaning method similar to the cold pull technique, which softens the filament just enough to pull it out, removing any residual material, debris, or contaminants. This enables clean color transitions with only a minimal amount of filament extruded into theefficient wipe towera compact, partially hollow block next to the printed object where the filament is purged and the pressure in the nozzle is stabilized. All purged filament goes into one location, so you dont have to worry about bits of plastic piling up around your printer.We offer multiple ways tosave filament and further reduce plastic waste.PrusaSlicer provides options likewipe-to-infill,where the printed objects infill is used instead of a wipe tower, or wipe-to-object, where another object serves as the wipe tower. The latter will result in a very colorful print, but if you need a functional part or plan to paint it later, itsan excellent way to minimize plastic waste.CHT VS STANDARD NOZZLEThe high-flow nozzle in the MK4S allows for much faster printing. However, when using the MMU3, the standard nozzle makes much more sense. Why? While the MMU3 works fine with a high-flow nozzle, the increased volumetric flow results in higher filament waste during printing. In other words, the MMU3 delivers the best performance, the same speed, and the highest efficiency (lowest waste) when combined with the standard nozzle in both MK4 and MK4S.So, if you order a standalone MMU3 for the MK4S you will receive it along with the standard nozzle. In the MK4S/MMU3 bundle, you will receive both nozzles in the package – the standard one as well as the high-flow nozzle. For assembled MK4S in a bundle with MMU3, the standard nozzle will be pre-installed on the printer by default.SMOOTH FILAMENT FEEDING SYSTEMWeve designed the filament feeding system for smooth and reliable operation. The filament travels through a PTFE tube into a buffer cassette and from there, it continues via another PTFE tube to the MMU3. This setup ensures smooth filament movement with minimal resistance while preventing tangling.SMART FIRMWARE WITH TWO-WAY COMMUNICATIONThe MMU3 firmware features seamless two-way communication between the unit and your Prusa 3D printer, ensuring smooth, reliable, and autonomous operation. If an issue occurs, the unit can diagnose and resolve it automatically while providing real-time status updates and detailed error descriptions directly on the printers LCD screen. You can control the MMU3 via the printers LCD menu or the units onboard buttons for quick manual adjustmentsmaking multi-material printing even more intuitive and hassle-free.RELIABLE PERFORMANCE AND EASY MAINTENANCEThanks to smart two-way communication between the unit and the printer, dependable filament switching, and a robust design, the MMU3 can handle thousands of filament changes without any manual intervention. Combined with its easy maintenance, this ensures a smooth and hassle-free user experience.PRUSASLICER MAKES MMU PRINTING EASYPrusaSlicer offers full support for the MMU3, providing an intuitive way to apply colors to different parts of your 3D model. With tools like the customizable brush, smart fill, and bucket tool, you can easily paint your model and assign each color to a specific extruder. PrusaSlicer optimizes material usage with features like the smart wipe tower, wipe-to-infill, and wipe-to-object, reducing filament waste and ensuring sharp color transitions.MMU3 package includesOriginal Prusa MMU3 assembled unit (for MK4S/MK3.9S)