The 2014 3D Print Show is all set to kick off, and Printrbot intends to show off their very first metal-framed 3D printer there. Printrbot happens to have the reputation of being one of the leading 3D printer manufacturers, where it is famous for its low-cost, open-source, wood-framed machines. Well, this time around, an evolution has happened with the new machine being coming in an aluminum and steel frame, making it a wee bit larger compared to the existing laser-cut plywood Simple.