first 3-d printing pen. literally allows you to draw in the air. it kind of got invented by accident. of when our 3-d printer made a mistake, missed a layer in its print process. and my partner turned to me and said that s really annoying i wish you could just take the nozzle off the 3-d printer and fill in that missing space. and we both kind of smacked our heads and said oh my god, you can do that. we launched on kickstarter in february of 2012. we were trying to raise $30,000. we ended up raising $2.3 million. we never envisioned the applications that have come to life. people have done things like make dresses. they have made shirts. after we launched the kickstarter, we were contacted by the visually impaired community. they wanted to use the 3-doodler for writing braille. we told them we didn t think it