3D Manufacturing Press Release CMU (IMAGE) DOE/Argonne National Laboratory Caption This image, taken under the synchrotron at Argonne National Laboratory, shows a keyhole void about to be formed during the metal 3-D printing process. During laser powder bed fusion, a 3-D printer "drills" a hole into the metal. Credit Image courtesy of Carnegie Mellon University. Usage Restrictions None License Licensed 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.