Working Y Splitter (Joiner) actually works - Spool Side Mount compatible

An actually working Y splitter for Bambulab printers to be used to allow AMS and manual feeding without PTFE tubes switching

Print the Joiner and the adaptor. make sure to add support on the joiner only where it is needed (i.e. the connection to the adaptor) and not inside the filament passage

print the joiner at 0.1mm layers!

This is to be used with :
https://www.printables.com/model/530614-bambu-x1c-side-mount-spool-holder-v2-for-filler-fi/comments/999148

NOTICE: Must follow instructions:

1. This should be printed in 0.1 layer height !!
2. Connect as follows: long pass is manual, short pass is AMS
3. Print with flat surface on print bed
4. Push the PTFE all the way in - it should be fitted into print (see photos) - you need to push the long PTFE all the way in! (the long PTFE is pushed into the manual bend some centimeters)
5. Print - run a filament through each entry making sure no leftovers from the printer.
6. Make sure the PTFE connecting the splitter to the printer is cut straight

After trying many Y splitters which failed, I reached the conclusion the Y splitter (actually joiner) should be designed differently:

• AMS feed should be flawless and therefore prioritized  (nobody cares about manual success rate)
• there shouldn't be a “joined tube” print - either a round feeder, or printer friendly “chamber”
• the design should take 3d printers characteristics in mind - print direction should be aligned with flow direction, no changes in printed tubes
• connect easily with existing PTFE tubes

taking all this in mind I designed an externally flat print, with “join chamber” instead of joining tubes. this one is compatible with standard PTFE (4mm) and 10 mm fitting connectors