Guys I installed a Delrin bushing in my pulley so now I need to bore it to size.Right now its about 1 1/4 so the opening is kinda small.I do have boring bars but they take inserts.This being some kind of plastic I figure the tool has to be real sharp so that would be HSS.Well I don't have a boring bar for HSS so what do I need to look for in boring bar and since this is a small opening I guess the cutting tool also needs to be small.Would that be say 1/4 x 1/4 HSS and a bar that is made for this size cutting tool?If you have any ideals and links to what I need please let me know.I have purchase from Shars before and they seem to have good prices,maybe something is there?Thanks guys