3-D Shapes (IMAGE) University of Michigan Caption Twisting spires are one of the 3-D shapes researchers at the University of Michigan were able to develop using a new manufacturing process. Credit A. John Hart 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.