Lots of inserts seem to have conical, or rather tapered, holes in them. How exactly does that work?
Looking at one I have handy, it seems the hole is tapered quite a lot at the top, and much less so at the bottom. Also the upper part of the hole seems much more accurately formed than the bottom - there's even a polished-looking section just below the top of the hole, though it isn't very deep.
Anyway, my silly question - if a screw with the wrong shape was used, is it likely that it could split the insert, or otherwise damage it?
-- Peter Fairbrother