Slipstenar
Active Member
there's no way to tell what's inside some stones, I had a perfectly looking Nakayama Maruka (no less) pop an inclusion out of nowhere after some lapping, there was no way to tell from the outside when I first got it.
Ofcourse is when you have tested the stone, not after a week or two.. The customer are not to lap it if there is stamps on it, Im just saying after a quick test run on a piece of steel to get a feel for it. It doesnt say the whole big deal, but you can get a feeling for it and quite fast realize if its good or not.
Any inclusions that show up after a while are hidden gems that no one can predict. I´ve hade those too and its not fun to have a really nice stone and one day there starts to be scratches on your knife
I´m really sorry for your Maruka !!!