Afternoon all,
For all the worriers who wouldn't dare to take a cut on their lathe greater than a few thou' read the text in the pic. below.
Image was extracted from a Drummond publication issued in 1930 entitled "Lathe Work, by some amateurs"

Nice food for thought innit.
Len.
P.S. Sorry the text is a bit dodgy, that's how it is in the publication and using photoshop it's the best I can manage.