Andreas Trummer (IMAGE) Graz University of Technology Caption Andreas Trummer and his team have been working intensively with the institute's own concrete 3D printer for several years in the robot design laboratory. The goal: massive material savings in concrete construction. Credit Lunghammer - TU Graz Usage Restrictions may be used free of charge when stating the source "Lunghammer - TU Graz" 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.