U.S. Copyright Office amends act in favor of open 3D printer materials: 44shares4400The U.S. Copyright Office has made an amendment to an existing act that prevented the use of non-manufacturer approved feedstocks in 3D printers. Upon the advice of the National Telecommunications and Information Administration (NTIA), the act has been amended due to its potential to inhibit much-needed material innovation. As David Redl, NTIA Administrator and Assistant Secretary …