Most everyone has seen the 3Doodler already. It’s a pen that melts plastic and rapidly cools it, allowing you to draw in three-dimension. The original pen began raising funds for production on Kickstarter in early 2013. Now after raising over $1.5 million dollars more than their $30,000 goal, the 3Doodler 2.0 is in full production.
I was and still am amazed at 3D printing in general. Thethings that people are making with a handheld 3D printer are quite amazing. Matt even made a radio controlled plane. You can read his blog for the process as well as photos and videos.