Anet A8 filament guide

A small piece that inserts into the extrusion mechanism to shorten the distance between the filament propeller and the tube, so as to avoid the filament escaping the expected path. Aimed at improving Flex printing. Designed for the Anet A8, but should work with any Prusa i3 or any printer that uses the same extruder assembly.

IMPORTANT NOTE: this is a _work_ _in_ _progress_, currently it doesn't work because I can't get the right dimensions... DON'T PRINT THIS as once assembled, the slight mi