Ender 3 Filament Guide

This is a [remix of Creality CR-10 Filament Guide](https://www.thingiverse.com/thing:2186253) adapted to the Ender 3. The main difference is that the PTFE tube now is perpendicular to the extruder (no longer at an angle). The original fits as well but creates friction between the filament and the extruder entrance creating dust after hours of printing. This version that goes straight into the extruder avoids this problem.

No support is needed while printing.