I can confuse myself when i think

Just think what this can do to others 

Thanks a lot for time.

Jeff

Art posted, back a few years ago  / before my time of using Mach, that a value of .0001 .............................

The thing is that with version R3.042.033 the rotary axis feedrate compensation was reworked.

So anything written years ago, may not apply any more.

Thanks for that info, Greg. So, the radius entered is really the location of Z zero relative to the axis of rotation?

Yes that is correct Gerry