Scientists from have developed a new method that can make customised 3D-printed metal parts containing different properties – such as having some regions of the metal stronger than others. The new technique from the researchers – led by Nanyang Technological University, Singapore and University of Cambridge – uses 3D-printing steps. Unlike traditional metal manufacturing processes, it does not require additional raw materials, mechanical treatment or drastic machining processes to achieve a similar effect, thus potentially helping to reduce manufacturing costs.