This book provides step by step recommendation to convert traditional lathe machine into CNC Machine. Nowadays, products can be produced by modern technology, which uses computer software and hardware in industries. It is desirable to use CNC machine to get more accurate dimensions and produce irregular shapes. It is conceivable to convert the conventional lathe machine into CNC machine by retrofitting. Developing and changing into CNC automatic lathe machine, there are three required portions; mechanical, electronics and hydraulic. In the present work, we have converted convention lathe in to automatic CNC lathe by considering cost factor as limitation of work. We are not making a new machine but converting the conventional lathe machine into a CNC machine which is useful in improving productivity also utilized for teaching and learning of CNC programming. In this experiment-based investigation work, we have substituted several components from conventional lathe by other valuable components & connect significant electronics parts. Therefore, all operations can be performed by controller. Therefore, machining time can be reduced and production rate can be increased. This book is targeting operators from small scale industries and students.