May way to success with the MMU2S  

May way to success with the MMU2S

So I guess we've been all there with our MMU2S'... Something's not working.

After reading through the forums, watching some YouTube and making my own judgments I basically ended up with the following changes...

Picture of the entire Setup:

PC4-M10 Through-hole Selector:

Will allow for the PTFE tube to be fed through the Connector and closer to the F.I.N.D.A. Ball eliminating the chance for the Filament making contact with anything other than the Tube - IMHO it really removed a lot of friction at that particular area.

3D Model and Cutaway:

Fileted the entry and exit areas to the F.I.N.D.A. Ball area / Got rid of the Blade and brought that area closer to the Selector Body / Some holes ( the three facing the PC4-M10 Block ) needed to be printed closed for better results as such they'll have to be drilled open once finished - I also changed the 2nd ( hexagonal ) M3 Nut holding the ACME Nut to a square one and have it fed from inside the ACME Nut hole - Get here: https://www.thingiverse.com/thing:3843016

PC4-M10 Extruder Inlet:

Not my design but also off Thingiverse - Eliminates another area for the filament to snag on since the Tube here as well is being fed through the Connector.

Selector Body PC4-M10 Entry ports:

Not exactly necessary DURING operation but a real blessing when a cable just doesn't want to go where I need it to go since the Tubing can easily be removed without unscrewing the whole area.

Filament Retract Bank:

Another design I picked up on Thingiverse - Takes a small eternity to print but it's modular so you can print as many as you need - Unlike the Prusa provided Buffer this worked for me.