Yet another CR-10 Filament Guide

I've got my filament spool mounted to the top rail of my CR-10 and I needed a simple guide to just keep the filament from unraveling all over as it spooled out. I made this to do the trick and it works pretty well at keeping things reasonably in check.

You stick the two pegs into the holes on the Z-axis rod guide at the top of the printer. Snaps right in and sticks out the side.