Printable Filament Spool

This simple filament spool can be used to both hold a spool of ~1.75mm filament or the spool itself and is part of the 3D printing chapter of my new book "[The Makerspace Workbench](http://shop.oreilly.com/product/0636920028147.do)" from Maker Media!. Simply print out the parts and attach them together using 1/4" wooden dowels, two 608 skateboard bearings, and a 8mm threaded rod. Enjoy!