Hyperboloid with base, desktop pen holder

UPDATE: Version 0v1 is a bit taller and I worked on the symmetry and cleaned up the base. Enjoy!

I wanted to put a base on "George Hart's 3D Sculptures" hyperboloid ( http://www.thingiverse.com/image:40818 ), but I could not get it to render in OpenSCAD.

So I cooked up this one.

It looks a little like this one from MakeALot:

http://www.thingiverse.com/thing:6917