|Size 150-100-20 mm, olive green, evergreen, red and white. Slightly translucent!|
|This is the face that I use. All sides are finished, so no skin.|
|The spot is a low point. I REALLY didn't want to surface this thing down. It's HARD!|
|Uses basically no water|
SUPER hard! This stone is really beautiful, lots of color and looks 3D. When I received it, it was all polished up with wax, I think. It looks like a gemstone, like a low grade jade or marble. Jadeite? Jasper? Funny to think of me sharpening old rusty tools with a semi-precious gemstone, haha. I tried it out, and the tools had a bad tendency to dig in and gouge and it felt very "grabby" or sticky. The tool would skate, then grab and gouge. Ha! Street fighter stone!
I lapped it with great difficulty using a 1200 DMT diamond stone. It forms a milky white, very thin slurry. Once it was flattened, it worked well. Needs a nagura! Expert stone, way above my pay grade. I'm still learning.
|DMT 1200 slurry, sometimes gray, other times white.|
|T= 1 minute ( after jyunsyou). See the reflection in the steel?|
|Nice bright mirror!|
I haven't done it yet, but one of these days, I am going to do isolation tests to more accurately gauge the grit of each of my stones, as a reference piece. It is actually completely irrelevant, but when I started buying stones, I pent a lot of time looking for this type of information. I am currently working my way through Tanaka Kiyoto's blog. He is a Japanese luthier and writes at great length about tools and sharpening stones. Oh yeah, and crafting guitars. He seems like a REALLY cool guy. I also really wish that I could read kanji. As it is, with Google translate I am only getting about 20% of the content and there is a lot to learn, if you know what to look for. I strive to learn enough to ask the right questions.
Speaking of asking questions, I am still trying to figure out what this stone is. There are some ink stones without wells, I have found.
|Han dynasty inkstone (from http://history.cultural-china.com)|