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No sir. As you know the abrasive particles will not quit cutting but the efficiency will be diminished when there is less material to remove. An “indication” you reached the abrasive grits...

As simple as some may think, more than one guy has mixed up the sides of the 4/8 Norton or any un-marked combo stone.
Mike

Maybe someone already mentioned this, but if you are using a Norton 4 white side/8 yellow side, one way to know when you are done with the 4K white side is that steel will not be releasing or...