I am using BobCam to cut an inside grove in a steel 1/4 inch hole. My tool is a 1/4 in. shank and cutter with 3/16 shaft. The groove need be only .01 deep. The posted code starts the cutter -.0075 in X and 0 in Y. If BobCad cant stat the X and Y at zero it is a no go. I do not write G Code so correcting this is beyond me.