Andrew Karas, the founder of Trinpy, is a big fan of Monster Jam events featuring incredible monster trucks in competition. He's turned his love into a 3D printed design, and made the files available for download at Trinpy so others can share the fun of a functional model monster truck. Karas designed 30 individual parts to be 3D printed, and the entire design takes more than 100 hours to print. Read more about the design and process, and check out the little monster truck in action, at 3DPrint.com: http://3dprint.com/92888/3d-printed-monster-truck/