In printing with Polycarbonate I decided it was time to create a Y-Splitter so I can leave the PC spool in the external drying box.  This way the humidity level will stay well below 20% and I won’t have to plan so far ahead to re-dry each time I want to print with it. 

This is my take on a Y-Splitter.   

1. I made the main body a hex shape.  This gives a flat surface to print from. 
2. Decided to make the ends of the Y-Splitter to work like a Pin Vice.  This  design eliminates any tolerance issues;  PTFE tube OD’s don’t measure exactly the same for reliable press fits. With a Pin Vice scheme, regardless of tube OD, as you tighten the nuts the PTFE tube gets held firmly. 
3. The Y-Splitter and Nuts require no supports, skirts or brims or anything special to print. But, do make sure your print surface is clean, I used the Bambu Lab textured PEI build surface and the Bambu Lab print surface adhesive (the liquid version). 
4. The Y-Splitter shown in use is made white ABS but, I elected to print the bottom of the direction arrows in black for good contrast. 

Below is a link to a Bambu Lab video on loading external materials. 

Enjoy

[https://www.youtube.com/watch?v=8Y0vCAYxvrU](https://www.youtube.com/watch?v=8Y0vCAYxvrU)