3Doodler

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 The advent of 3D printing introduced the convenience of quickly making designs a reality, and one company is bringing this creative ease to your fingertips. 3Doodler, dubbed the "world's first 3D printing pen," lets you draw three-dimensional structures in midair.
Toy and robotics company WobbleWorks created the pen to make 3D printing affordable and accessible. While most 3D printers can cost you thousands of dollars, 3Doodler is available for preorder on Kickstarter for $75.
"If you can scribble, trace or wave a finger in the air you can use a 3Doodler," the designers say on their site.

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