Brain white matter modelled with 3D printing

This is so cool, your doctor should be able describe your damage on this model.
http://www.cnet.com/news/brain-white-matter-modelled-with-3d-printing/
In the average 20-year-old male brain, there are some 176,000km of myelinated axons. As you can therefore imagine, creating an accurate 3D model of the brain's white matter would be no mean feat -- and the execution of a new model for the Franklin Institute's current exhibition, Your Brain, posed a series of challenges.

I believe I only killed off 35,640 km of mylinated axons

Nine pictures at this link; http://www.3dsystems.com/learning-center/case-studies/3d-printing-mystery-brain