Actually I didn't mean to be critical of the centrifugal abrasive method. I think JL mentioned a long time back that he had successfully opened a choke eccentrically (more off one side and moron the other?) with a rattail file to move POI so anything is possible for those who have the skill and judgment to make it work. That "moron" thing came from proprietary bicycle tubing. Forget the feller who had this line of titanium pipes but it had "moron" the ends thus Moron tubing. But that "Walker" method of handling an unpiloted reamer ( Mike Orlen used to promote it with a little sidebar on his business site) seems especially iffy in the on-axis dept.
jack
