Filament guide wheel
thingiverse
Modified from http://www.thingiverse.com/thing:436198 I hacked away the base parts, inserting a 1/4 inch socket to accommodate a standard 9mm machine screw. This modified part now easily installs in any printer that supports threaded mounting via an M3 or equivalent sized bolt.
Download Model from thingiverse
With this file you will be able to print Filament guide wheel with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Filament guide wheel.