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The Gutenberg printing press, which was invented around A.D. 1440, truly revolutionized the world. It allowed more people to have access to books, which until that time had to be manually copied by hand. Today the world is seeing another revolutionary advance in printing technology, but this time in 3D printing.
A racing car about 285 micrometers long printed at the Vienna University of Technology
The concept of 3D printing isn't that far removed from the traditional printing technique of basically casting ink on a page. It just adds multiple layers that build up an object in 3D. In some cases, it exists around multiple compounds that bond together to create a 3D object.
It isn't actually new -- it has existed for more than a decade. However, researchers at the Vienna University of Technology have developed a 3D printer with nanoprecision that uses two-photon lithography.
