The spider spool (collapsible parametric filament reel holder)

This is an openscad rewrite of the clever filament holder by Boardofdenver, now fully parametrized to accomodate any diameter. With the customizer you can tweak all the geometry: thickness, number of arms, segment lengths, angles and so...
Here is a video of the thing: http://www.youtube.com/watch?v=tNVpsIQXVbE
I also added two holes on each branch to lock the other end of the filament (check the close-up with the blue filament).
You will find two predefined geometries, you can mix the hub