I agree the advantages of CNC are more than the disadvantages. But as far as having a warehouse full of taper bars. I have a CNC machine dedicated to doing nothing but shaft tapering and I think with a half of dozen taper bars I could do every program in it. So you are right that that Computer can hold the same as a warehouse full of taper bars, but in all honesty no one needs that many taper bars or programs.
Highlighted in RED (above) are the only advantages I would concede; my 25-year-old CNC tapering machine can do everything else on that short list, and/or does not have those issues (for example, after 25 years of continuous service I would say "controller burnout" is an imaginary issue). I'm confused by the last point, about your "hogging passes" on your "manual inlay machine", as I thought we were just talking about tapering lathes in this thread.
Otherwise, if he wants an incredibly versatile turning station that will make any round thing he needs (ANY round thing), then he should consider CNC. There is nothing - NOTHING - a manual machine can produce that cannot very easily be made with CNC, but there are many operations CNC can execute that would require a warehouse full of taper bars and excess set-up time with a manual machine. Whatever advantages you feel manual machining may have over CNC cannot be important enough to overcome that simple fact (in my opinion).
TW
:deadhorse:
