The CNC machines have accuracy in the millionths. Plus offsets can be programmed into the control to improve the accuracy when the cutting ram is more out of the head that holds it. The extended weight can affect the accuracy. They actually burn this offset into the computer so it works when the ram is extended. This works on any CNC. Of course they probably have better stuff by now.

Fact, the better CNC 4 & 6 axis controllers were never shipped out of our country. We allowed only the 2 axis controllers to be shipped. So no one could match our manufacturing might.