Quote Originally Posted by Musht View Post
A mill having a fixed Z turret and moving X Y slides, and a router having a fixed table and moving gantry?
Quite a few CNC mills have fixed tables, it's just that conventional mills were all pretty much moving table.
The difference between a mill / router is more of construction than anything else, with mills generally having lots more weight with a lower speed spindle capable of high torque, whereas routers are generally lighter with a higher speed spindle/less torque. There are off course lots of exceptions to those, with some routers being more than capable of handling steel, and mills with high speed spindles, but the big difference is the mill hold tight tolerances all day long, whereas routers are generally not as accurate.