Low-friction Filament Reel Mount for Makerbot

I had a problem with prints stopping in the middle of a print. I read online that some people were able to solve this with a low-friction mounting method for the filament.

Looking through the other things in thingiverse, I got the idea to use airsoft BB's as the balls in the bearing. These are low-cost, smooth, and I already have them by the thousands.

I simply made the bearing mountable to the Makerbot.

I consider this design complete, although there probably could be improvements.