Editors He, Li, Yahg, Hao, and Zhao present readers with a collection of peer-reviewed papers selected from research presented at the twelfth International Conference on High Speed Machining, held in October of 2015 in Nanjing, China. The editors have organized the selections that make up the main body of the text in five chapters devoted to the mechanisms and technology of high speed machining, micro-machining and non-traditional machining technologies, recent developments in high speed machine tools and cutting tools, and other related subjects. Annotation ©2016 Ringgold, Inc., Portland, OR (protoview.com)