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Day 5 is all about CNC Control. CNC Control is made up of three parts. The CNC Control Computer, CNC Control Software and the actually CNC Controller.
The CNC Control Computer can be basic and inexpensive. The computer will live in a harsh environment that includes dust and dirt.
The CNC Control Software is what processes the G-Code program we made in the last step. You load it in and when you are ready, start the program.
The actual CNC Controller has drivers in it and translates the signals from the control program into motion. It sends the signals on to stepper or servo motors that move the various axis
All together these pieces can cost a lot or a little. You can also cut down the cost if you build the cnc controller yourself.

Tomorrow we machine. This is where the chips fly.