i have now testet the m3/m4 ,change form 6000 to 9000,it helps on the first toolpath the spindel start to spin up and waith longer before it goes to work.
but after i have run the tool changemacro M6 then it goes down and spin up and hit the workpiece before the rpm is ok?? so it doesnt matter if i change the m3 for the second toolpath??or m4