Advancements in micro milling, tool treatments, and ultra-precision machining centers have significantly enhanced the fabrication of micro-scale components across various industries. This paper provides a comprehensive review of recent developments in these areas, focusing on the impact of tool material innovations, surface treatments, and state-of-the-art machining centers on machining accuracy, surface finish, and tool longevity. The integration of advanced tool treatments and ultra-precision machining technologies has led to improved performance and expanded applications in fields such as biomedical engineering, electronics, and aerospace. The study discusses need and advantages of tool coating, and cryogenic treatment on tools for efficient machining and enhancement of tool life. Future research directions are also discussed, emphasizing the need for continued innovation to meet the growing demand for high-precision micro-manufacturing.