Stevens thermoplastic polyurethanes (TPUs) are for medical and surgical devices. These TPUs do not contain plasticizers and are suitable for high-performance products used in critical "can't fail" medical situations. Stevens Urethane Film, Sheet, and Tubing for Medical Applications brochure includes tables that compare the properties of urethane, such as elongation, tear, and strength, with other flexible materials such as PVC. Information on products using TPUs is also included.
The Space Kid, 11, will be one of the first civilians to have his design manufactured in space by NASA, thanks to the City X Project, which inspires kids to think about new 3D-printed inventions that could be useful for humans living in space.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.