nmkid
Gold $$ Contributor
I have one of these. They work just fine and are beyond sharp!Have you ever tried this one?
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It is more of a tapered reamer with a center and depth stop, it is generally a hand tool but it too can be powered. This is what I like to call the nuclear solution. If there is an ID chamfer issue, this should kill it.
All of the ones above should work no problem, but I thought I would point this out in the case where you hadn't seen it.