Kristian Arntz studied Mechanical Engineering and Materials Technology at the RWTH Aachen University, majoring in Production Technology. He worked as scientist in the Process Technology department at Fraunhofer IPT from 2003 to 2009 and became head of the „Tool and Die Making“ business unit in 2005. Since April 2009, Kristian Arntz has been chief engineer of the department „Laser Material Processing“ at Fraunhofer IPT. He is Technical Director and Associate of the WBA Aachener Werkzeugbau Akademie GmbH and Managing Director of the ACAM Aachen Center for Additive Manufacturing GmbH.
Johannes Witzel received his diploma in Mechanical Engineering and a second diploma in Industrial Engineering and Management from the RWTH Aachen University. Additionally he received his master in Industrial Engineering from the Tsinghua University, P.R. China. He worked as scientist in the additive manufacturing department at the Chair for Laser Technology of the RWTH Aachen University from 2009 to 2015, concentrating on Laser Metal Deposition of high temperature alloys. Since 2015, Johannes Witzel has been project coordinator in the department „Additive Manufacturing and Functional Layers“ at Fraunhofer ILT. He is Managing Director of the ACAM Aachen Center for Additive Manufacturing GmbH.