I recently completed a project combining my love of typography and my fascination with 3D printing. The experiment was a project that turned hand waving gestures into a 3D object. It started as a simple idea to make one light streak character into a 3D object, then I decided to take it further and develop a full working font suite to give away free.
All the characters are made from photographing light streaks generated from my iPhone using 3.5 second exposures in darkness. You can view the project and download the free font here.