This document summarizes the state of 3D printing based on a presentation given in Seoul, Korea in June 2016. It finds that the 3D printing industry is healthy and growing, with desktop 3D printer sales up 69.7% in 2015 and metal 3D printer producers numbering 80 companies. Major companies are developing the technology and ecosystem further. Applications continue to expand in areas like aerospace, where Airbus is using 3D printed parts. The growth and opportunities in 3D printing are vast and expected to create many new jobs as the ecosystem develops further.