MMU3 selector front plate for connector PC4M6 with pointer

What:

  It's for PRUSA MMU3, for the selector front plate to use a PC4M6 ptfe connector.

  PC4M6 is for M4 ptfe tube (outer diameter=4mm, everyone uses this type of PTFE for 3D print), the connector threaded part has diameter 6mm,  the prusa original connector is 5mm.

It also has a pointer (for multi color print) for easy indicator of current channel.

features:

1. use a more commonly available and low cost PC4M6 connector, no special part needed.  In the original design, MMU3 uses a special PC4M5 connector, it also requires a metal brass threaded part for the said connector. very special, I don't like special parts, not easy to buy and replace.
2. It has a pointer pointing to the selected channel, but you must use multi color print to achieve the color (two colors, base and pointer)
3. The thread is fine tuned to be good fit for PC4M6, it's easy enough for hand to rotate, and hard enough to loose it.
4. part hole bottom has chamfer, easier for filament to pass through

Installation:

1. recommend prepare the PTFE first, use knife to rotate in the tube opening a few times to cut a chamfer entrance for easy loading filament.

2. Insert the PTFE with chamfer entrance into the PC4M6, push it to the end , push hard to make sure it reach the end.

Files:

•   Fusion360 source files provided,  
•   Step file provided, 
•   STL file provided (multi color supported)

Print Setting:

  petg etc,  3+ perimeter,  20%+ as usual.

  must enable external perimeter first option to achieve best dimensional accuracy : prusa slicer, Print Setting tab -→ Layers and Permeters → lower half of the GUI, Advanced , External Perimeter First, Check the box

 Multicolor print:

   If you want color pointer, must print in two colors:

In slicer, choose Split -→ Parts  , ( Not split objects) 

choose a color for main part and a different color for the pointer part.

number of color changes: 8  ( not very bad)