My senior design team was tasked with the creation of a FDM 3D printer for use by CMU’s Society of Automotive Engineers design teams. We completed the project in a semester and met our target specifications. The machine features a CoreXY mechanism for the X and Y axes, and a belt driven Z axis with a 20:1 worm and wheel to prevent backdriving. You can check out the CAD model at https://a360.co/2UUweS1.