Flee market stone 2

Well it is not a slate. Looks more like a sandstone type of stone.
Such as for example the Gosauer we have in Germany:

Attachment 334141
Attachment 334142

How hard and fine is the stone really?

Regards Peter

Quote:

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Originally Posted by hatzicho

Well it is not a slate. Looks more like a sandstone type of stone.
Such as for example the Gosauer we have in Germany:

Attachment 334141
Attachment 334142

How hard and fine is the stone really?

Regards Peter

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It took a 300grit diamond plate quite a bit of time to to flatten it. As for how fine I can only compare it to what I have at my disposal.
It is not quite as fine as the Coticule from my other post.

But much finer than my Norton 8k but if feels a bit more gritty than my Shapton 12k.

If you can tell me a way to test how hard it really is I would be glad to try it.

Quote:

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Originally Posted by PaulFLUS

Thuringians typically have saw marks along the side. It is always possible that they were lapped away but more the exception than the rule.

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Like these for example.
Attachment 334144

Quote:

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Originally Posted by PaulFLUS

Like these for example.
Attachment 334144

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I never saw any saw marks on this one but that that line on yours that runs the length of the stone is also present on mine.