cnc lathes and mills are used for what exactly? any chance this type of craftsmanship being replaced by tech?
I am a CNC machinist. CNC lathes can be used to produce anything a manual lathe can. This is also true of CNC lathes.
CNC machines are much more economical to use than their manual counterparts (at least for high-volume production) due to their repeatability, their lower per-piece cost, their ability to be left unattended, and their ease of control. Once programmed and debugged, a CNC lathe or mill can theoretically produce millions of identical pieces, provided the cutting tools (Titanium-carbide inserts on tool steel cutting tools) are maintained.
By the way, the lathe is the only tool that can be used to reproduce itself.