Configurable roller bearing

I made an OpenSCAD script to generate designs for roller bearings.
The support must be printed with a soluble material, I used HIPS and ABS but you could use PVA.

The attached renders show the internal workings of the bearing and the support material.

The print is quite difficult and I have not yet had a completely working bearing. See more about the roller design process at http://blog.laserphile.com