Yes that's just like it, but as Bill said they don't normally get used like that.
After a bit of messing with my subroutine I got it all working and I've cut one set so far.
I had to move the sub below the main code and I forgot to add a return at the end of the M99 so mach didn't see it and only ran through once.
Below are the results of the first run, it looks good so far, just have to see if it's the right size
, should be as the step is the bottom dia of the tooth and the cutter left very faint marks on it.
Steve