Hey twisty puzzlers,
You might be interested to read this whitepaper on the future of 3D printing, which a bunch of 3D printing companies such as Shapeways and MakerBot sent to policy-makers in Washington, to attempt to work out the legislative issues that will arise from the predicted widespread use of 3D printing.
I couldn't love the title more.
http://publicknowledge.org/it-will-be-a ... crew-it-up-Eitan