Lunet (IMAGE) University of Houston Caption Lunet is made up of common 3D-printed plastics polylactic acid and thermoplastic polyurethane. Each finger contains four parts held together by plastic pins. Credit University of Houston Usage Restrictions Credit University of Houston 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.