Improved Filament Guide

More efforts to improve filament feeding into the printer- mostly to try and eliminate filament jams around the spool, but also to reduce the force required to pull filament off the spool. The files for this filament feeder can be found on thingiverse: http://www.thingiverse.com/thing:199104

Components printed and ready to go

608 bearings pressed into place

whole range of parts tried- no wheel version on the left, and various guide peg locations on the right. 

Assembled

And running!