“Aluminum High Speed Machining” quickly delves into an explanation of why HSM conditions (18,000 rpm, in this study) produce remarkable results, such as improved surface finish, lower machining forces and longer tool life, in addition to significant productivity gains (increased metal removal rates). Given these benefits, users might wonder if the quality of the metalworking fluid applied in HSM contributes any further value, which it clearly does in conventional machining. Results show that a properly formulated fluid does offer significant benefit, especially in terms of reduced tool wear and part quality. In HSM of aluminum, the right fluid still helps.