I used Autodesk Inventor to create my own, and Instructables to print it off. Instead of a clear sphere I decided it would be much easier to make a cube out of clear acrylic, I found a relativity inexpensive piece at Home Depot.
This is a complicated design (at least for me) so rather than showing how to make each part, because allot of them are mostly the same just on a different axis, I will show the methods that I used to make them.
Thanks for reading, and if you could any votes comments or rating are much appreciated thank you-Lucas
Step 1: Materials/Equipment
3D Design software: I used Autodesk Inventor, so this tutorial will be based on that program However there are free alternatives that you can use as well. Google scketchup perhaps.
Access/Your own 3D Printer: Instructables has an amazing group you could join if your interested call "Free 3D Prints". Shapways and other online services will let you upload a larger object but it will cost you.
Clear acrylic sheet (or cube if you could find one) I found one at home depot
Small ball bearing or bead.
Saw to cut the acrylic with.
Glue and Tape to hold the cube together. Crazy glue and some clear tape for dry fitting.
Micrometer or ruler