Andy has been active in the additive manufacturing (AM) industry since the early 1990’s. From 2000 to 2014 he was the President and Owner of Medical Modeling Inc., a world-leading medical device AM service bureau based in Golden, Colorado. On April 2, 2014 Medical Modeling was acquired by 3D Systems Corporation. Mr. Christensen is also a current board member of the World Craniofacial Foundation and has been involved with the Society of Manufacturing Engineers RTAM (Rapid Technologies and Additive Manufacturing) technical community for many years. He has authored three book chapters and a number of articles on the use of AM technology for medical device applications. He is also a recipient of the SME/RTAM Industry Achievement Award, a prestigious award given for groundbreaking work in the AM industry.