3D-printed steam turbine blade (IMAGE) DOE/Oak Ridge National Laboratory Caption Contoured steam turbine blades require a very precise shape, with contoured curves that narrow toward the tip. Wire arc 3D printing had not previously been used to make a rotating component of this scale. Credit Carlos Jones/ORNL, U.S. Dept. of Energy Usage Restrictions n/a License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.