I generally rough at the slowest possible speed .I then shape at what I
feel is a medium speed.I almost always do a finishing cut at a medium
high speed. I was simply taught this procedure from an old and talented
turner and,it has always served me well.I have never had to use my
lathe above three quarters of the maximum speed.As for the higher speed
on the final cut,Maybe it is my imagination but...The chisel or scraper
doesn't seem to chatter as much and I feel that I am getting a cleaner
cut.