This peer-reviewed journal, focusing on the rapidly moving field of 3D printing and related technologies, provides comprehensive coverage of academic research and industrial and commercial developments that have applications in medicine, education, food, and architecture. It also explores emerging challenges and opportunities ranging from new developments of processes and materials to new simulation and design tools, and informative applications and case studies. The journal addresses the important questions surrounding this powerful and growing field, including issues in policy and law, intellectual property, data standards, safety and liability, environmental impact, social, economic, and humanitarian implications, and emerging business models at the industrial and consumer scales.