Rhino-made 3D printed mold for plastic injection

I am currently working on a proof of concept project to see how easily one can manufacture a fully functional plastic injection molded part. The "ingredients" in this recipe are Rhino 3D, a ZPrinter 3D printer from Z Corporation and a bench-top plastic injection machine from Galomb.
A key element in this application is the fact that prototypes created with the ZPrinter are made of Gypsum which makes them resistant to much higher temperatures than plastic-made parts - thus making it suitable as material for molds.
As a sample part for this project I chose to quickly and easily model in Rhino 3D a simple coin with our logo on it. Then I created the volume for the mold as well as channels for plastic and air flow. A quick Boolean Difference operation made the mold complete.
I want to point out that it is very nice and practical to have the Z Corporation native file format built-in into Rhino 3D. Naturally one can always save to STL and then open it up in the ZPrint-software. But it makes life easier to just choose File > Print 3-D > Z Corp Print, right from within Rhino's File-menu.

More info:
http://www.rhinofablab.com/profiles/blogs/rhinomade-3d-printed-mold-for

Move Videos:
http://www.flickr.com/photos/creative_tools/sets/72157626733863210/