Arch wrote:
OTOH, why is turning at the highest possible rpm any better?

Two quick answers 'cus I have to go.

- high speed vibration is easier to overcome with out bodies.
- except for TaiChi masters, slow flowing movements are difficult to
achieve, and slow feed rates are needed at slow speeds.

--
Derek Andrews, woodturner

http://www.seafoamwoodturning.com
http://chipshop.blogspot.com - a blog for my customers
http://www.seafoamwoodturning.com/TheToolrest/ - a blog for woodturners