thank you wizardfor you calm and all
from today i will start using this when changing tools :
cutting1
G00 X... Z... M203 ( safe position, identical for other tools )
<T... M66> <G97/G96 S... ><move to operation M63>
cutting2
M65 i got it, but i won't used it ... maybe only to make a call to Australia
M61 will follow G96kindly !