This paved way for metalworking and heavier machines with thicker and more rigid parts. Then in the 1950s, the servo mechanism was added to be able to control the lathe machine and it became the easiest lathe machine to operate until a British engineer named Henry Maudslay invented the Computer Numerical Control (CNC) lathe which is the most advanced form of lathe machine.http://www.xzylathe.com/lathe-machine/