Customizable LEGO Technic Hub

I wanted to be able to rotate two different LEGO assemblies around the same axis so I created this customizable hub. It is based on my Customizable Curved Beams for LEGO Technic http://www.thingiverse.com/thing:629875. Even though you could create a complete circle from the curved beam design, this is a more efficient approach.

This thing is customizable either with the center solid with a cross to hold a LEGO axle or without as just a ring. The number of holes can also be selected which det