CNC machinists must gain skills in both programming and metal-working to make full use of the power of a CNC machine. Technical trade schools and apprenticeship programs often start students on manual lathes to get a feel for how to cut metal. The machinist should be able to envision all three dimensions. Today software makes it easier than ever to make complex parts, because the part shape can be drawn virtually and then tool paths can be suggested by software to make those parts. http://www.haofengcncmachine.com/wire-rail-machine-tool/mill-turn-lathe/cnc-mill-turn-lathe.html