It was a pretty lengthy process. There was a range of feeds, depending on how smooth the finished cut needed to be. The machine we had was purchased in the late 1970s, so it was nowhere near as sophisticated as more modern ones are these days.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!