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CNC thread forming.
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Previously:
80 threads per inch fastener close-up - photo
CNC cutting internal threads - GIF
CNC threading a large nut - GIF
Cutting threads with a milling machine - GIF
Looks like they are still cutting the thread!
I bought one of those tools. Used it a few times. It's neat.
This is the AvE video that made me buy that tool:
https://www.youtube.com/watch?v=FIgg6sey0C8
There a few ways to make a thread, Ralph. Cutting or forming are two methods (there are more). A cut-tap produces a chip. A form-tap extrudes the material into the thread shape. There are no chips in the above process. Also, look at the tap and you will notice there are no cutting flutes.