MMU2 PTFE Holder Upgrade to M5 Push-to-Connect

I used the stl model  “mmu2-rear-PTFE-holder” (Electronics & Assembly) from @Prusa3D. I added holes for Push-To-Connect fittings so the filament can be removed easily without going through the whole tube. There are photos of most steps in the process.

Reason for Creation: 

In it's current state, clearing a bad filament tip from an MMU2S gets rather cumbersome. To pull the filament back from the MMU and cut the end, the filament has to go all the way back through the PTFE tube. Although there are many others who have made their own designs for the same, I chose to model up my own version to confirm a minimized amount of materials and prevent the need for supports.

Hardware required:

5x FESTO Push-in fitting QSM-M5-4
https://www.digikey.com/en/products/detail/festo-corporation/QSM-M5-4/13977882

5x Heat-Set Inserts for Plastic
Brass, M5 x 0.8 mm, 9.5 mm Installed Length
https://www.mcmaster.com/94459A180/

Optional Equipment:

Installation Tip for 10-32/10-24/M5 Thread Size Heat-Set Inserts for Plastics (Optional)
https://www.mcmaster.com/92160A127/

Filament Used:

GreenGate3D Mars Red PET-G
https://greengate3d.com/products/new-mars-red-recycled-pet-g?_pos=1&_sid=e427b6f76&_ss=r

Personal Printer Settings

Layer height: 0.20mm
Perimeters: 2
Infill: 15%
Infill Pattern: Rectilinear
Top Fill Pattern: Monotonic
Top Solid Layers: 5
Bottom Fill Pattern: Monotonic
Bottom Solid Layers: 4

Procedure:

1. Print with the large holes down.
2. Install the Heat-Set inserts with the smooth end facing in toward the printed part.
3. Use a pick and/or knife to remove the extra flash caused by the melting process.
4. Screw in the 5 Push-In fittings
5. Attach the current ends of the PTFE tube. This will make it easier to keep hold of all the ends. (now would be a good time to test the removal of these tubes)
6. Remove the original PTFE Holder
7. Use a countersink, deburring tool, or knife edge to create a chamfer. This will help filament guide through the tube.
8. Push the PTFE tube into the other end of the print. Make sure it actually goes in all the way in.
9. Cut the filament as shown in the photos. Any more (or less) could affect how the filament feeds. The end of the PTFEs will probably be pinched and need to be reopened.
10. Push the tubes into the MMU at an angle to bring it into place.
11. Keep the new filament holder up slightly to aid in putting the outer screws into place.
12. Finish installing the other screws.
13. Happy Printing!!!

Honorable Mentions (And boy are there alot of us): 

https://www.printables.com/model/51131-mmu2s-rear-ptfe-holder by @Finder_01_68007

https://www.printables.com/model/22339-prusa-mmu2s-rear-ptfe-holder by @IsaacW

https://www.printables.com/model/57819-prusa-mk3-mmu2-rear-ptfe-tube-holder-with-6mm-thre by @JustMe_108639

https://www.printables.com/model/111195-prusa-mmu2s-rear-ptfe-holder-m10 by @Droodle

https://www.printables.com/model/74406-mmu2s-rear-ptfe-holder-with-non-passthrough-push-t by @Badfurball_152178

https://www.printables.com/model/52991-mmu2s-rear-ptfe-holder by @Honzal

https://www.printables.com/model/6605-prusa-mmu2-ptfe-holder-m10-passthrough-adapter by @vertigo235_33

https://www.printables.com/model/35392-prusa-mmu2s-rear-ptfe-coupler by @BrentWerder_37411

https://www.printables.com/model/126732-prusa-mmu2-ptfe-m6-adapter by @Mat_40138

…I'm sure I'm missing others