Mechanical design engineer Mikhail Tikh was intriuged when he learned, via Reddit thread, about the knucklebones of sheep and goats being used as an ancient form of dice. A fan of both history and board games, he decided to 3D print his own set, which he has made available on Shapeways, Thingiverse and YouMagine. Read more at 3DPrint.com: http://3dprint.com/98943/3d-printed-knucklebone-dice/