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Thanks for the tip on the diamond, I picked one up after looking for several years. Work raise and better sharpening skills and steel that benefits from it all converged.

If anyone needs an even more expensive stone for razor sharpness, try this guy.

4F4849DF-437E-4DC4-A32D-E50A4F969713.jpeg
 
Should be the finest stones available. Very good for razors and meat processing (most sought after stones for kosher clipping blades) .

i try`d them and they are really fine. Even good for last steps of Kasumi for the harder steel.

SirCutALot
 
captaincaed said:
Thanks for the tip on the diamond, I picked one up after looking for several years. Work raise and better sharpening skills and steel that benefits from it all converged.

If anyone needs an even more expensive stone for razor sharpness, try this guy.

View attachment 227167
Click to expand...
And there is still four days to go.

Apparently it is rabbis that drive the crazy prices on those, because, as said above, they are considered a kosher stone for honing butcher knives, and other cutting implements with religious significance. Something I didn't know until a few months ago. There are also kosher examples of coticules.
 
Legion74 said:
And there is still four days to go.

Apparently it is rabbis that drive the crazy prices on those, because, as said above, they are considered a kosher stone for honing butcher knives, and other cutting implements with religious significance. Something I didn't know until a few months ago. There are also kosher examples of coticules.
Click to expand...
Very interesting. What makes a sharpening stone kosher or not kosher?
 
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stringer said:
Very interesting. What makes a sharpening stone kosher or not kosher?
Click to expand...
Well, with coticules, and I'm assuming Thuris are the same, they must be water stones, never used with oil. And they need to be free of cracks and imperfections that might absorb blood from the animal being butchered. They need to have a very pure and consistent colour. There may be other requirements I don't know of. Ardennes has, or had a seperate line of coticules they sold that met all the specifications.

The knives used need to be kosher as well, and there are a whole bunch of rules there too.

tough-standards-knife-sharpening-new-york
 
Legion74 said:
Well, with coticules, and I'm assuming Thuris are the same, they must be water stones, never used with oil. And they need to be free of cracks and imperfections that might absorb blood from the animal being butchered. They need to have a very pure and consistent colour. There may be other requirements I don't know of. Ardennes has, or had a seperate line of coticules they sold that met all the specifications.

The knives used need to be kosher as well, and there are a whole bunch of rules there too.

tough-standards-knife-sharpening-new-york
Click to expand...
Sounds like the knives need to be surgical steel to qualify. They drop the knives in boiling water to clean them.
 
stringer said:
I never understand some stuff like this. You can buy a brand new Dan's Surgical Black for less than that.

I have one of those wood Ikea poang chairs with the cushion. I have had it since I was in college. My wife wants to sell it because she thinks she can get $500 for it since it is "vintage." This is in spite of the fact that you can still buy the exact same chair from Ikea today brand new for less than $200. And the cushion probably won't have as much cat vomit on it.
Click to expand...
It was the unusually large size that pushed those stones so high. I hope the black one was legit for the price paid, it did look the part but hard to say for sure.
 
SolidSnake03 said:
Have to agree, the tl:dr is that it’s excellent. Expensive as F? Yes. Awesome as F? Also yes.
Click to expand...
I’m pretty excited about this. Arrives tomorrow…

Desert Rat said:
It was the unusually large size that pushed those stones so high. I hope the black one was legit for the price paid, it did look the part but hard to say for sure.
Click to expand...
I inherited one of these. It’s pretty killer to have one as wide as a plane blade. But I’d be very hard pressed to pay that much for one.
 
Legion74 said:
they must be water stones, never used with oil. And they need to be free of cracks and imperfections. They need to have a very pure and consistent colour.
Click to expand...

No thank you Mr. Great Turk. We don't want any of your horrid grimy old whetstones over here!
 
Desert Rat said:
It was the unusually large size that pushed those stones so high. I hope the black one was legit for the price paid, it did look the part but hard to say for sure.
Click to expand...

Man, I wish I could find it now but I can't. Back when the Halls still owned Hall's Pro Edge, before selling to what is now RH Preyda, old man Hall did a video on how to sharpen a knife. Being already elderly and YouTube still being quite new, the Halls didn't have a ton of video content but this one always stood out to me as he was using this ginormous stone that only someone in the business could have.

My lustful memory may be exaggerating it some but not much when I say it seemed to be something like 3"x12 or 14" or so. It was this huge stone that he was making these long sweeping strokes back and forth (actually side to side) on. Probably a soft but no less impressive. Can't imagine there were many stones like that around even then let alone now.

I suspect Preyda got all the vid rights and maybe that's why they aren't out there any more.
 
Are these the same stones that Bernal got recently? They look pretty similar to me

 
blokey said:
https://www.gritomatic.com/products...-cbn-for-edge-pro?_pos=1&_sid=33b7b7cc4&_ss=rInteresting, the CBN Venev cost more than the diamond but it is thicker, hope they have a full size bench stone
Click to expand...
You can get these electroplated CBN plates from Germany
CBN Plate Set 200/400 And 800/1200 With Holder » Schleifjunkies
There was a review on youtube I think Never a Dull moment and he felt they compared favorably to diamonds if I remember
I think gritomatic did have some metallic bonded 1000 grit CBN stones mounted on glass plates that were 8x3. Deadboxhero did a review on them (in like 2018) but I am not sure they were ever released. They were going to be expensive like $400 or something.
Of course you can get the spyderco CBN stones
Riko or Rikon or something like that is a bench stone brand for some CBN plates on some woodworking sites.
 
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Yeah. I don’t think they have a clue what they have. Why only pics of the slate?
 
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