2x - Filament guide to avoid Jamming with non standard spool size

--UPDATE oct 2013 - Added a new version with different designs and pictures installed . More easy to stick and provide better filament guidance. Print both element , one for right one for left.

The original "simpler" design still available, but highly recommend new version. Not one problem since installed...

I got plenty of issues with some spool and their filament that kept getting of the spool limits and locked itself between the back oft he makerbot and the spool itself. After few turn.