Craig,
That sounds more promising, as the other method just will not work for me.
I do not want to go back and control my main spindle manually.
My test would not allow the MPG to work on the A Axis and I could not see how Homing or Limits would work.
So unless a Mach4 Guru or the Mach4 programmer comes up with a solution that will allow all the proper functions to operate with A Axis and the Spindle and provide a way to make the A Axis using the Z Axis to change its speed, I will stay with Mach3 on our Router Table and not bother with the 4th Axis on our Mill.
May be before I hit the bucket someone will do this for us all.
Thanks Craig.
Regards,
Mauri.