Filament Funnel For Frustration-Free Feeding Customizer

I was tweaking my Filament Funnel for Frustration-Free Feeding (6F) when I realized that I'd designed the thing to fit my own filament tubes with my own filament, and wouldn't work with other tube or filament diameters. Since I designed it in OpenSCAD anyway, I figured I'd just upload it and let you change whatever you want. This is my first time trying to do this, so let me know what you think.

This is a guide to make it much easier to load filament into tiny holes in tubes. One end slips ov