The Hobbit ad gives a downloadable blueprint for a 3D-printed model

To promote The Hobbit: Desolution of Smaug Microsoft and Warner Bros are offering a free 3D printer blueprint of The Key of Erebor from the film. The advertising campaign will run across MSN, Xbox 360 and Windows 8 with an interactive dive into the film...

via Pocket-lint http://www.pocket-lint.com/news/125513-the-hobbit-ad-gives-a-downloadable-blueprint-for-a-3d-printed-model