Hi All,
I haven't gone to sleep, rather been thinking long and hard, and performing some tests.
My tests (based on blind faith in Mach3's ability to report Feed per Revolution accurately in the F DRO in Mach3 Lathe) reveal that Constant Surface Speed is accurate but, as reported by Hood, Feed per Revolution appears to vary whenever the X Axis is in motion in CSS mode. I have concluded that, in my case, it doesn't really matter, but have proposed a couple of possible solutions to improve constant chip load.
My report is attached.
Regards
Chris Humphris