About this 3D model

Like other makerbotters I am obsessed with free flowing plastic. I got a 16 pack of bearings and started designing. This spool holder works with the type of spools of plastic that MakerBot sells. Other things my design takes advantage of: Parameterized printable spring http://www.thingiverse.com/thing:21234 Makerbot 1 kg Spool Holder Mashup http://www.thingiverse.com/thing:10463