Sandstone from the Oregon coast, found in my front yard (hopefully not my wife's favorite landscape design element). Very easy to process, not too hard and very homogeneous particle composition. Density is also very even. Not overly thirsty, nothing like the other local sandstone that I use. It looks like it will be about #1000-#1500 grit? If I wasn't familiar with the OTHER sandstone, I would guess #150 and scratchy as hell, haha!
Pretty smooth, easy to use and a surprisingly fine finish. No scratchy bits!
A diamond nagura seems to speed things along. This stone is not very porous, surprised..
Much finer than I was expecting!
A different angle. I am TRYING to get the light right, to show the scratch pattern. The pattern is still uneven, though, because I haven't actually flattened the bevel yet. A perfect example of why a flat bevel makes things MUCH easier in the long run. I can't imagine how a person would get consistently fine results with a less than flat plane/surface.
This is turning out to be a very easy stone to use! Very forgiving, VERY even, reasonably fast (especially considering the fineness!)
A fresh look using a different, harder blade, polished very fine with my Ozuku asagi.
This is as fine as I can get with a natural stone. Ozuku asagi.
NOW we'll step back to see what sort of a scratch pattern this sandstone leaves.
I need to think of a name to reference this stone.... Anyways, this is the new sandstone again, using the ODC nagura. A bit slower with this harder blade, but not much. This is maybe #5000-#8000? The scratches still look very prominent.....
But it is actually very reflective. Steel is bright mirror, iron is moderately hazy, probably due to the ODC as much as anything.
So, there you have it. A very respectable rock! Not perfect, but you could easily call this your final finish, AND I found it about 20 feet from my front door! A bit of mud, but not muddy, just enough to give a slight cushion. Water management is not an issue, so no soaking is necessary. No real tendency to dish either.
I love finding these things. The whole process is so unlikely, it still just amazes me. I just need to fill the empty hole in the rock border with one of my "failure" stones before my wife notices.....