Thread: Thuringians and C12K

LOL not at ya, but with ya

OK first off there are 4 different grades/types of PHIG's that I know of myself, all 4 slightly different... There are even more grades of Thuringen and even more differences between them...

So the problem you ask about is by definition even harder to nail down...

There are many Rock-hounds that could make a very educated guess with the stone in hand but even that is not 100% accurate...

Size is the first clue though...


PHIG = People's Hone of Indeterminate Grit

Most Guangxi's have circular saw marks. Guangxi's are much harder than Thuringians.

Some pictures would help.

Yea Piet, I know what you mean by the circular saw marks and I actually saw what I believe are those similar marks on this "possible" Thuringian. I think I am going to go upstairs and see if I can take a few pics of it, to post, right now.

Be back in a bit.

Speaking of Rock-Hounds, Piet is one

Here are a few pics. A couple are from the top side, which I have done some honing on. The "darker" veins are on the bottom side, which actually has some chips in it. The one pic is the "Thuringian" sitting next to the larger C12K.

if the color is correct this does not look like c12k, they are lighter shade of gray.

Yes I did round the edges. I must say that this little stone was quite easy to lap and round the edges. There were some chips in the edges so I rounded them out.

Originally Posted by JNT

Yes I did round the edges. I must say that this little stone was quite easy to lap and round the edges. There were some chips in the edges so I rounded them out.

I did not see all detail correctly, the edges are not too rounded. Is the color as you look at the stone the same as in the picture? It looks blue gray-ish?

In person, and sitting right next to each other, the C12K is a very slight darker grey, more like a blue-grey while the smaller stone is more just grey. In certain lights and at certain angles they almost look identical though. Dang this is frustrating!

I got this stone in a lot with a few others off ebay. The seller did not list this as a Thuringian nor did it come in any case or package.

Originally Posted by JNT

Yes I did round the edges. I must say that this little stone was quite easy to lap and round the edges. There were some chips in the edges so I rounded them out.

If that's the case, my guess is that it's a Thuri. The Chinese 12k stones are very hard. I've had a Chinese 12k and I've now got a Thuri and whilst the Chinese 12k was a very good finisher, especially for the price, the Thuri is alot better.