The Additive Stereo Lithograph Is a futuristic device from the Jeffersonian Archaeology Department seen in The Bones that Weren't. The Additive Stereo Lithograph uses lasers to cure micro-thin layers of liquid resin into hard plastic. The stacking of these two-dimensional layers creates a three-dimensional object. Angela Montenegro used the Additive Stereo Lithograph to create a highly accurate plastic replica of Robert Pearson skeleton.