Bearing spool holder

I've designed a spool holder for the orbi-tech.de reels that improves on my previous "Bearing for filament spindle" design (http://www.thingiverse.com/thing:4640) by using the bearings as an integral part of the whole design.

The bearings now fit snugly into the spool centre holes, with lips to stop them from going all the way through. The centre hub extends to provide holes for 8mm wooden dowels which connect the spool and bearings to the 4 feet below.

The base is designed to splay out sl