Mechanochemistry is basically an interface between mechanical engineering and chemistry. It's the combination of mechanical and chemical phenomena on a molecular scale, and a synthesis technique that's spread across all areas of chemistry. A team of researchers with the Université catholique de Louvain (UCL) in Belgium is working on this interesting field of study, and using 3D printing technology to improve their experiment. Read more at 3DPrint.com: http://3dprint.com/180329/3d-printed-ball-milling-jars/