We have a 3Doodler! This nifty pen is a hand held 3D printing pen, check out the possibilities. First, an explanation: The 3Doodler works very similarly to a hot glue gun. The plastic filament feeds in through the back, passes through a heating element, and comes out of the tip at one of two speeds, fast, and slow. The now pliable plastic comes out in a thin string which quickly cools in the air and becomes solid again. You can draw flat on a piece of paper, freehand or by tracing a stencil…