The book presents select proceedings of the 8th International and 29th All India Manufacturing Technology, Design and Research (AIMTDR 2021) conference. It covers recent advances in the realms of electro- physical and chemical machining, machining optimization, surface morphology and sustainable machining. The contents also include precision engineering, metrology and quality, automation and smart systems, enterprise manufacturing intelligence, among others.  This book will evoke interest among academicians, researchers, and practicing engineers who aspire to comprehend advances pertaining to the domain of modern machining processes