Lunar rover wheel prototype (IMAGE) DOE/Oak Ridge National Laboratory Caption Despite enabling a more complex spoke pattern and spoke locking features to the wheel, 3D-printing simplified and reduced the cost of the wheel design and made final assembly easier Credit Carlos Jones/ORNL, U.S. Dept. of Energy Usage Restrictions None 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.