Ender 3 Filament Guide short

Variant for the [ 2020 / Ender 3 Filament Guide by Filboyt ](https://www.thingiverse.com/thing:2917932). Needed a shorter filament guide to more easily put the Ender-3 in a box for ABS printing. Get the fitting end clip from the original thing.

This short version fits in both ways better. However, this means it needs a bit of support.

OpenSCAD remix code included so you can modify and make your own remix.