Customizable filament mixer

I am learning to use openscad, and this was one thing I always wanted to do.
Have not been able to test it, yet. (would need another motherboard)
I have some doubt about the threads and the filament might get stuck at the lower fitting.
But I thought I share it anyway.

Thingiverse misses some libraries, so this is not working in the customizer. It is quite heavy on calculation anyway. Took 10 minutes to render in openscad (the threads...).

I am using dotSCAD and threads.scad in this project.
Found threads here: https://dkprojects.net/openscad-threads
dotSCAD here: https://github.com/JustinSDK/dotSCAD