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> On Apr 8, 2018, at 6:06 PM, Don Schwartz wrote:
>
>
> I have a small Black Hard Arkansas stone which is concave ( hollow Jeff) on
one side and convex on the other. I know the convex side is going to be hard to
flatten, so I'm working on the concave side. I am using a coarse Norton
Crystolon stone ( SiC, 100 grit maybe ) with my usual mix of lamp oil and dish
detergent ( washing-up soap Jeff). It's cutting, but I'm finding it very slow
going. Apart from a surface grinder, is there a better way?
>
Don,
I bought a translucent Arkansas stone that the seller said he flattened on a
diamond plate. It is definitely flat. Diamond should cut the black too.
Bill
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