Thread: Japanese Natural Finishers...

I believe this is cus of the particle shape. I have no clue what shape the Shapton's grit is, or crox, but diamond is angular and I bet that's why people thinking its harsh, it leaves tiny little angular serations in the edge. My bet is that like the coticule, the CrOx particles are round, so when they cut they makes smoothed cuts.

Originally Posted by khaos

I believe this is cus of the particle shape. I have no clue what shape the Shapton's grit is, or crox, but diamond is angular and I bet that's why people thinking its harsh, it leaves tiny little angular serations in the edge. My bet is that like the coticule, the CrOx particles are round, so when they cut they makes smoothed cuts.

I'm not sure if the particles in chromium oxide are exactly the same as the garnets in the coticule, but I have read that chromium oxide is much less aggresive than diamond particles so it leaves shallower scratches. So pretty much the same property as the coticule, but perhaps on a different scale (i.e. grit).

Ok, so what shape are the serrations if we move the blade parallel to the edge rather than perpendicular/diagonally?

Truth is we cannot tell how deep scratches are. The idea that x micron particle makes an equal depth scratch is incorrect.

Personally I think pasted stropping will do alot. One problem is how to do it properly, aka "when is it done" (was it this stroke or the one before or the next one)-not to mention- I dont know or even use paste but I have prejudices) so; using a 3 part pasted strop process using diamonds is going to radically and rapidly alter whatever was there originally.

More of my opinion if you will allow. The point of using a high grade natural finish should be simplification and elimination of steps. Old School and I don't always get along but he is right about this: these stones(which I mean the good ones) do not need much help: a coarse, a medium, and fine.

Usually that is 1, 5 , 8 , nat for me. Maybe that doesnt sound right but those are synthetic so we loose the range of a good middle and my fine finish is very fine. Maybe I'm backpeddling and ordering diamond spray atm

talking thinking wondering about this stuff is better than tv, ive read all my books, and there is no rommance this night-what should i be doing

Originally Posted by kevint

Ok, so what shape are the serrations if we move the blade parallel to the edge rather than perpendicular/diagonally?

Truth is we cannot tell how deep scratches are. The idea that x micron particle makes an equal depth scratch is incorrect.

Good point kevint. I agree that the depth of the scrath isn't the same as the grit, but imagine you have a 1 cm crystal (like a diamond) and a 1 cm ball (like a ping pong ball) and I asked you to scratch a slab of wood with it, the crystal will gouge into it and make a deeper, more angular scratch than the ball.

Of course for the analogy we must assume both the crystal and teh ball are hard enough to scratch wood.