G96-(M only)Constant surface footage on.
It must be turned back off before any T code or you get an alarm.
So index to the tool then turn on. When finished turn off, and then
index to the next tool.
G50 S5000 (clamp max rpm )
G96 S200 M3 (CSFM on at 200 SFM)
G97 S2000 (CSFM off and spindle 2000 RPM)