In an earlier contribution to this discussion,
David White wrote:

How do you tell the difference between an oil-stone and a wet-stone?

David.

This may not be a cast iron definition, but . . .

An oil stone is usually brick-shaped and grey in colour - and you sharpen
chisels and plane blades on it, lubricated by oil.

A wet stone is lighter in colour, and often circular - and rotates in a
trough of water as you turn a handle. It's used for sharpening knives. The
butcher in the village where I was brought up used to use one.
--
Cheers,
Set Square
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