About this 3D model

Inspired by a challenge on the make Magazine http://blog.makezine.com/2012/11/05/math-monday-even-greater-circle/ I decided to make the model for the intersection of 31 great circles. This and all my other items can be found on my blog http://msraynsford.blogspot.com/2012/11/project-4-31-great-circles.html