Although slightly off-topic probably of interest for all modellers/builders/designers/millers
here.If there are objects which cannot be milled for any reason there is the probability of what is called "3D printing", a technique where an object is completely build up of a material (in stead of that it is cut out of a material).
The website is rather chaotic, but nevertheless very complete.
http://www.shapeways.com/
How to (also on the site):
http://www.youtube.com/watch?v=TQoTro9WfbQ&eurl=http%3A%2F%2Fwww%2Eshapeways%2Ecom%2Fabout%2Fhow%5Fdoes%5Fit%5Fwork&feature=player_embedded
Hessel