This nefarious device can easily launch a U.S. penny across a room when printed at 1:1 scale. It's the first upgrade many Seej players seek when they need a little more oomph than the Zheng3 Penny Catapult can provide. Seej is an open-source tabletop wargame based around 3D printing. http://www.s33j.net Do you need this in your arsenal? Yes. Yes you do. Penny not included!