It’s as much a part of the architect’s image as a drafting desk or a T-square: sitting around a table with a client when the moment of inspiration hits and the first image of a new building is hastily scrawled on a napkin. But why limit yourself to two dimensions in hatching your new idea? In the age of 3D printing, the napkin sketch could be completely transformed by a new instant-prototyper: the 3Doodler pen, which would allow you to draw your idea in real time rising up from the tabletop. And the public seems eager to give it a try, already contributing over $1.8 million to the 3D-printing pen on Kickstarter with nearly a month left to go.

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