An optimized filament guide for the MakerBot Replicator 2 3D printer, this is a part of an optimized design of the spool holder and filament guide eliminating the need of a teflon filament guide tube. The modification with changed spool position and the guides available here work really well for us, don't forget to share feedback if you try this yourself.

More details and a complete guide on this modification is available here: http://3dprinting-blog.com/454-optimizing-the-filament-spool-and-guide-on-makerbot-replicator-2/