Filament Guide

Simple filament guide that clips to the top of the 6mm Prusa i3 MK2 gantry. I saw some horror pictures of people's spools overspinning on free rolling spool holders then binding up on the outer part of the axle as the filament is used up. Someone said a guide helps prevent that.

So I noticed a guide prevents the spool from overspinning too much as the filament will bind against the guide instead of freely flowing out towards the front of the printer. Also, the guide keeps the filament centered on the spool preventing filament from running out on the sides and getting caught up on the axle.