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I was cleaning the GDLP after lapping every stone. Looking at the swirl marks it seems like there was/is a bit of grit stuck in a few very specific spots. Or a sharp point on the plate, as the...

I am just trying to get a set of stones in shape so I can learn to hone with them. After going through nearly all of them I noticed light scratches in one, so I re-did the pencil grid and lapped on...