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Gerrit, how large were the chips in the razor Glen works in that video compared to the one the OP is dealing with?

I would guess more like 30 mins (I've never actually timed myself removing chips, so that's a pretty wild guess), but it depends on the individual doing the honing. Definitely not three hours.

I would use tape and take them out with normal honing (circles) on my 1k, but if you are comfortable with something more aggressive that's fine too.