I've never seen any bigger sizes.
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I've never seen any bigger sizes.
Yes there are bigger sizes around ;-) i think there were ones in 15cm and 20cm lenght....
I bought a 20cm piece a week ago from a dear friend. He too thinks that they are as good or bit finer than a classic Thuringian, but faster and harder.
And, I've also seen a piece that was 20+x6-7x5cm on a meeting, it's a great stone, congratulations Aaron.
It's funny how any random seller places a name of a geologic period before the name of the stone. "Oh I'm sorry, you wanted a (that period) Thuringian. That's from another one, but it's still a Thuringian! That's all that matters"
The stone looks a lot like a Schwedenstein. Marked, they are almost always a "combo" with a thin, no more than 1cm piece of stone on one side, and leather on the back, on a wooden box/paddle like thing. Unmarked, they are really rare, and aside from the reddish coloration that I have never seen, the pattern of differently colored lines and dots in the grey/green or even darker background is the indicator. And as always, their performance.
And, Peter/hazitcho is as always right about the stone on the thread he opened http://straightrazorpalace.com/hones...ein-hones.html
Could this be one?http://uploads.tapatalk-cdn.com/2016...9dae14bfaf.jpghttp://uploads.tapatalk-cdn.com/2016...5f0369f199.jpghttp://uploads.tapatalk-cdn.com/2016...0509822e89.jpghttp://uploads.tapatalk-cdn.com/2016...bf78ec1877.jpg
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I am certain beyond all reasonable doubt that I have no idea, but looking at it reminds me of a Chinese stone of an estimated 15,000 to 20,000 grit, You say yours is soft; the Chinese one is hard, and requires lapping to flatten the stone. as the are not flattened to begin with and takes for ever to accomplish. If you go on the internet, search Guangxi sharpening stones there will be a section which is all images. This is how I discovered my "50,000" grit stone I bought to be a 12,000 to 15,000. Its surface is like a "Swarty" stone, but duller in nature. The Swarty, as I understand was used by barbers in years gone by as a quick, 5 stroke lap to touch the blade up while shaving someone. I attempted to look up german stones which would be equivalent to your pictures but could not find anything near it.