Anet A8 Filament Guide

This guide provides a solid ring, yet the filament can be easily removed if needed. I didn't like how almost every other guide has a gap for the filament to find its way back out of, or worse, get jammed in and mess up a print -- nor was I content with a strip of blue painter's tape as a solution. Also, there might be times I want to remove the filament from the guide, but not from the extruder, and this makes it super easy.

UPDATE: 3-1-17
I modified the Base piece by filleting the front lef