About this 3D model

http://youtu.be/gEIllJJvZ0c This is an early prototype version. I have created an improved and more advanced version which can be purchased here: https://redpah.com/product/221/deskorbe Mechanical design, outer casing rotates three separate bevel gears to cause the inside geometries to rotate in the opposite direction. This is my first design, printable as a single working part, no assembly needed.