Filament Guide Prusa i3 MK2

UPDATE:
http://www.thingiverse.com/thing:1816987
This is a improved Version of the Guide.
It works better when printing tall (Z-Axis) Objects.
You should use this one.


This is a filamentguide for the Prusa i3 Mk2.
It can be attached to the metal-frame and prevents the filament bouncing from the roll.
It's very slim, and fit's perfect below the roll.