Art,
I explained what the trade considers "Z safe" in a response to Steve. It's just a safe place to index the turret during program execution. The actual position is established in the program in a number of different ways depending on what features the control has.
I'm excited about Mach2turn. I'm currently using AHHA on one turning center that I'd like to upgrade. I don't have an XP or W2000 machine, so I can't evaluate it yet. Will Mach2 install on NT4? I see you have threading working now. Do you have constant surface speed and tool radius offsets going yet?
-Bob
