English
1. Introduction
Step 1 of 18 (Chapter 2 of 15)
Contents
Comments
⬢In this chapter, we will partly disassemble the MMU2S unit and harvest a few key parts to be used for the MMU3 build.
Ensure your MMU printer is powered off and disconnected. Unload all filaments from both the printer and the MMU unit.
⬢If there is a filament loaded in the extruder, use the Unload filament function in the menu.
⬢
In the upcoming steps, we'll start by detaching the MMU unit from the printer and disconnecting the buffer from it.
Pay close attention to the description. When instructed, put aside the components from the MMU2S. Specific parts will be used again in a later step.
Maintain a well-organized workspace to avoid mixing older parts with the new ones. Although some new components might resemble the old ones, they are actually distinct. Note that certain components shouldn't be reused for MMU3, while others are necessary for the upgrade.
Contents
Original Prusa MMU3 Assembly (includes upgrade from MMU2S)
- 1. Introduction
- 2. MMU2S Disassembly (UPG)
- Introduction
- Tools necessary for this chapter
- Disconnecting the PTFE tubes
- Disconnecting the MMU2S (part 1)
- Disconnecting the MMU2S (part 2)
- Removing MMU2S from the printer
- MMU-to-Extruder PTFE tube disassembly
- MMU2S Unit disassembly
- Textile wrap removal
- Idler motor removal
- 5x16sh shafts removal
- Bearings removal
- Selector motor removal
- Selector removal
- Pulley motor removal
- Selector disassembly
- Control board disassembly
- Summary
- 3. MMU2S Buffer Disassembly (UPG)
- 4. Idler Body Assembly
- 5. Selector Assembly
- 6. Pulley Body Assembly
- 7. Spool holder Assembly
- 8A. Cassette Buffer Assembly
- 9A. MK4/S, MK3.9/S Nextruder mod
- 9B. MK3S+ / MK3.5 Extruder mod (KIT)
- 9C. MK3S+ Extruder (UPG)
- 10A. MK4/S, MK3.9/S Setup and Calibration
- 10B. MK3S+ Setup and Calibration
- 10C. MK3.5 Setup and Calibration
- 11. First Flight
Comments
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BigToeDaddyO
•
What if you are starting with a completely unassembled MMU2 (still in the box) and a completely assembled and functional MK3S+ ?
David B.
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Hi! In case you also have the MMU2S to MMU3 upgrade kit, you can continue from the chapter 4. Idler assembly. - and just use the basic components from the MMU2S kit.
The MMU2S kit alone will miss some of the important components for the MMU3 such as the Idler coupler, ferromagnetic ball for the selector, magnet for the selector, 2.5mm ID PTFE tubes, Collets etc. This is why you need to either get the MMU2S to MMU3 kit, or source the missing components yourself.