The logic here is kind of wonky. It assumes because you can manufacture a tool, it also means you're an expert at applying that tool to a job.
Bro, I don’t know how to tell you this, but an iPhone case isn’t that complicated
We have people who make ball bearings for the guidance gyroscopes in cruise missiles. That is tight tolerance. I made optics mounts for the laser rangefinder in the nose of F35s.. that’s tight tolerance AND complex geometry
A phone case is really pretty minimal in terms of complexity
So what I’m doing is disparaging the claim that iPhone cases are hard to build, requiring tooling and expertise that America doesn’t have
What engineers they have are probably Taiwanese, who have to be there just to make sure they don’t fuck it up. If there were a glut of talented engineers and machinists in China, the place that loves manufacturing so much, then they could make their own machine tools
Edit: you added so let me respond
I was describing a three axis machine, which is a basic cnc mill. If you want to add more axis, they are pluggable add-ons in the case of a basic cnc mill
Nobody has to “be good at g code” because CAD/CAM software exists to convert drawings to gcode. Solidworks lets you go from a 3D articulable model to CAD/CAM
Haas is good at making cnc mills and they’re here. There is virtually no machine tool production in china because their culture is a disaster when it comes to quality
You’re out past what you actually know about