List of parts for MMU2S to MMU3 upgrades

Below is a list of parts needed to upgrade an MMU2S to MMU3 (for MK3S+ or MK3.5/S), and to convert an MMU3 for MK3S+ to an MMU3 for MK4/S or MK3.9/S. 

MMU2S to MMU3 (for MK3S+, MK3.5/S) parts list

The only difference is the main cable. All other parts are the same between MMU2S to MMU3 upgrades, installed on either the MK3S+ or MK3.5S. 

• MK3S+ MMU3 printer cable - Einsy
  
• MK3.5/S MMU3 Printer Cable

Printed parts are listed on the dedicated Printables page for MMU3 printed parts. 

• Idler
  • 6x 5x16sh shaft
  • 2x 5x6x25bt bushing tube
  • 1x magnet (10x6x2 mm) (not purchaseable separately, part of this set of magnets)
  • 1x coupler 5mm 
  • 6x 625 bearing
  • 1x ball 7mm (ferromagnetic, zinc-coated) 
  • 2x blade 
  • 1x silicone stopper 
• Pulley and ELE:
  • 5x collet
  • 5x PTFE tube 4x2.5x19
  • 1x MMU PD-board addon
• Buffer:
  • 10x PTFE 4x2.5x650
  • 5x 693-2RS bearing
  • 10x collet
  • 5x 2.9x8.5 shaft 
• Fasteners as per package (spares included):
  • 4x spring
  • 11x M3x30 screw
  • 32x M3x6 screw
  • 28x M3nS screw
  • 25x M3n nut
  • 38x M3x10 screw
  • 4x M3x18 screw
  • 3x setscrew M4x5
• Extruder parts:
  • 1x PTFE 4x2.5x360
  • 5x washer M3/3.2/9/0.8 A2
  • Prusa lubricant

MMU3 for MK3S+ to MMU3 for MK4/S, MK3.9/S

• Printed parts for nextruder (Printables)
• Electronics cover set (Printables)
• 5x spoolholder set
• MK4/S, MK3.9/S parts for MMU3:
  • 2x M3nN nut
  • 2x magnet 3x1
  • 2x M3x35 screw
  • 2x M3x22 screw
  • 1x PTFE 4x2.5x360
  • 1x MMU3 printer cable - Buddy
  • 1x Main Plate set MMU3 (needed parts: 1x main-plate PCCF + 1x O-ring 24.5x1.5) 
  • 20x zip-tie

From MMU2 for MK3S+ to MMU3 for MK4/S, MK3.9/S

Use the list MMU2S to MMU3, excluding the Extruder parts.

The main cable to use is the MMU3-to-xBuddy main cable.

Then, use the list MMU3 for MK3S+ to MMU3 for MK4/S, MK3.9/S for the remaining parts to equip on MK4/S or MK3.9/S.