How cymbals are made.
Not widely used, but a great machine tool. At 1:33 is an "Arter". What's odd, Arter is known as a vertically rotary tabled grinder, with a right angled spindle, not a vertical lathe. But it trims the spun discs perfectly and centered, with female/ male form chuck. Earlier in the process a circle shear does the job, but the blanks are still flat.
...we'll learn more by wandering than searching...
I have only seen one Arter in a factory (that made electrical transformers) and it wasn't being used when I saw it.
I have seen so many machines that were modified from the original purpose/design, my mind goes that way at times.
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