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Alex and Takeshi are both great. Max at JNS is good too, but shipping from Denmark is high. He sells sets of Mikawa naguras that are nice and usually has a wide selection of Jnats in all price...

Neil,

The King is 300-500 grit according to the reviews, so it is certainly a cleaning stone.

The 12000 is listed as a natural and seems to be well thought of, but I'd also bet it isn't really...

I don't really know about the King or Matsuta, but the Naniwa "brown biscuit' is reportedly about 600 grit. If the King etc are in the same ballpark, and I imagine they are, they would be much...

Try it and see, natural naguras that is, the synthetic stones supplied with synthetic hones are nearly always conditioning stones as you note.

A natural nagura on a natural stone (Jnat) is usually...