Dr. David R. Curtis is the Research and Technology Manager for The University of Sheffield Advanced Manufacturing Research Centres (AMRC) Machining Group and Co-Director of the Industrial Doctorate Centre in Machining Science. He joined the AMRC in 2009 and has delivered both fundamental research and industrial impact in the subtractive process technology field supporting primarily the aerospace and defence sector. His research specialism is in abrasive processes but this extends into conventional and assisted hybrid subtractive processes. His technology development focus spans new materials, processing of near net components, digital / sustainable / productive subtractive, zero defect manufacturer as well as flexible subtractive platforms.