filament magnetic base for MK3S+&MMU2S

[WORK IN PROGRESS] - I have been testing the solution for 2 months before go public, comments very welcome.

Magnetic base for easy filament change. 

Due to the high force of the filament being pushed out, in addition to the magnets, a flange and a locknut were added. The nut is optional the flange itself makes the connector hold very securely.

What you need:
- PLA/PET-G filament (in my case Devil Design PET-G)
- PTFE tubing (in my case CREALITY, matching holes in the connectors)
- magnets 10x4x4.3 (4.3mm hole, magnets adapted for screw are not suitable)
- 5x PTFE M6 4mm connector (mine is Creality)
- 2x M3x10mm bolt (to permanently connect the base to the mounts)
- 2x M3x16mm with M3 nuts (replace current Z axis screws)

Important!
1. You need to replace the two M3 bolts holding the Z axis with longer ones and add two nuts.

2. Use the correct print position and support blocking according to the image. 

3. In order to fit the nuts, park the head while the connectors are being printed and fit the previously prepared nuts.

[NEXT STEP] - Adaptation of the solution to MK4 and MMU3 - waiting for the shipment.

[KNOWN PROBLEMS] [SOLVED] - when the end of the filament is detected, the piece of filament being pushed out from printer does not reach the base, it can only be removed by pushing a piece of another filament through the base (you have to first move the MMU2S head two positions sideways to free the hole - with buttons on the MMU2S). Minor issue, only applies when the filament runs out, further printing proceeds without any problems, filament is outside the printer in rear PTFE. [Solution1] longer PTFE tube between the MMU2S and the printhead - more filament will then be pushed out. The required length of PTFE between the MMU2S and the print head depends on the length of the PTFE used between the MMU2S and the base. After assembling, measure how much longer the filament waste should be so that it can be easily removed. This is the dimension by which the tube between the MMU2S and the printhead should be extended. The tubes should not be too long. [Solution2 - recommended] Just use the push out filament option in the printer menu, no changes needed. It will move the MMU head to the service position and push some of filament out the front.