Okay since I have been thinking about this all day the light finally came on!!!!!!!!!!!!!!!!!!!!! Jack what I think you have to do is-"Example only"- Say the bearing is .5 inch in diameter and the cutter is .75 inch diameter. That would make the cutting edge .125 inch protrusion. Stephen's drawing shows the bearing and cutter diameter drawn on the center of the vecter that would be .375 inch from the spindle. The cut at this point would only skim the spindle since it is the same distance from the spindle as the radius of the cutter. Therefore it seems you would offset the cutter .15 to the outside of the vector which is towards the spindle. Hope I am correct??!! My problem I was trying to use the indexer all this time and really you stated in one of your responses to look at the spindle as a flat surface. Therefore all the indexer is doing is turning the spindle to the next necessary degree. BoyI sure hope I have it right this time.