O.K., I may have run across something that works pretty good, It's a 10/32 NF TAP! the first 3/8 of an inch is tapered slightly and when chucked into a small drill, it tapers the first 3/8 inch to a near perfect match with the hinge pin! Like I said, I have tried stone cones & metal grinding burr's and could never find one that matched the pin's taper. Thank You all for your suggestions, and when installing pin's into two rounded or beveled surfaces, the small dremmel sanding drum look's like the ticket!