Makergear M2 Filament Guide
Since I replaced the stock spool holder with my own variation ( http://www.thingiverse.com/thing:49596 ) I needed a new filament guide. Here's my original attempt at that.
I'm not sure how well it'll work, but it fits perfectly...we'll see how well it does at guiding the filament.
I'm sure this won't be my only pass at this.