Quote Originally Posted by JAZZCNC View Post
I think it's been working ok on same piece of code then just happens John so I kind of ruled missed step out has it would happen pritty much all the time if overtuned.? Or at least move some random amount.?
I assumed that too, but it's usually going wrong right at the end of the job when the tool is being lifted right up out of the workpiece, moving slightly and then zooming back down again (when we are cutting in several passes - we still have to get our techniques right!) so it's when it moves a up and down a (relatively) long way in a short space of time that it goes a bit strange.

Thanks again!