The Lix Pen is a particularly small 3D printer in the shape of a pen, allowing free-standing objects to be drawn by hand. The pen is filled at the top using a plastic rod. The plastic is heated and comes out in molten form at the lower end of the pen. It can be shaped as desired until it sets after a short period of time. The pen has a housing made of anodised aluminium that is available in black and silver. The pen is powered via a USB port.