Thread: Sharpening/Polishing Stone Grits

I apologize in advance if this has not been covered in some other forum. I have been reading some of the links asking if someone should use this or that stone and I'm not sure if some realize that there are differences in how "grits" are measured. I only have experiences with Japanese wet-stones (other than a couple diamond stones for kitchen knives) and a couple of Shapton stones. This link ) is one that I found years ago when I began to find interest on polishing Japanese swords: [FONT=Garamond][SIZE=1][COLOR=Black][FONT=&quot] www.nihonzashi.com

I'm relatively new to SR shaving (3-4 months), but puting a keen edge on blade is an old hat. The key is not taking too much material away & removing the scratches from the previous stone. I can't believe that it took me so long to give SR shaving a try. I'm hooked.

Equivalent Grit Table
Particle
Size
(Microns) US
Grit Japanese
Grit Examples
0.5 12000 25000 Chromium Oxide Polishing Compound, Moor White Ceramic
1 5000 10000 Honyama Awasi (Brown Stone), Linde C Compound (Aluminum Oxide Powder)
2 3000 6000 Karasu (Blue Stone), Awasi Toshi
3 2000 4000 Uchigumori, Extra Fine White Ceramic, Green Chrome Rouge, Spyderco Extra Fine Ceramic
6 1200 2500 Ao-To (Blue Stone), Spyderco Fine Ceramic
10 1000 2000 Hard Black Arkansas, Extra-Fine Diamond Hone, Lansky Ultra-Fine Hone
15 800 1500 Koma-Nagura, Hard White Arkansas, Extra Fine Diamond, Medium Ceramic, Moor Black Ceramic
20 600 1000 Soft Arkansas, Lansky Fine Hone, Ultra Fine Scotch-Brite Pad, Spyderco Medium Ceramic
25 480 800 Chu-Nagura, Washita Stone, Fine Diamond
35 320 500 Kaisei (Natural Sandstone), Fine India, Medium Diamond, Super/Extra Fine Scotch-Brite Belt/Pad
45 280 400 Medium India, Fine Crystolon (Silicon Carbide), Coarse Diamond, Lansky Medium Hone
60 220 300 Binsui Coarse Stone, Extra Coarse Diamond Hone, Very Fine Scotch-Brite Belt/Pad
80 180 260 Fine Scotch-Brite Belt/Pad
90 150 220 Medium Crystolon (Silicon Carbide), Coarse India, Medium Scotch-Brite Belt/Pad
110 120 180 Arato (Natural Sandstone Or Carborundum), Lansky Course Hone
150 100 150 Coarse Crystolon (Silicon Carbide)
180 80 90 Lansky Extra Coarse Hone, Coarse Scotch-Brite Belt/Pad

Someone already made a chart but the natural stones are not listed by name, since they are mostly approximations anyway:

http://straightrazorpalace.com/attac...aug-6-2009.pdf

Originally Posted by avatar1999

Someone already made a chart but the natural stones are not listed by name, since they are mostly approximations anyway:

http://straightrazorpalace.com/attac...aug-6-2009.pdf

I should have looked a bit harder for the information. I just wanted to point out how the different countries rate their grit...but it was covered. Another day late & of course another dollar short.

Yes, the natural stones do vary & can get quite costly. I've got quite a few bucks tied up into my stones.

Thanks again & forgive my over-site.

Can someone point me in the direction of this "Moor White Ceramic" listed in league with the chromium oxide?

thanks,

Ben

Originally Posted by Ben325e

Can someone point me in the direction of this "Moor White Ceramic" listed in league with the chromium oxide?

thanks,

Ben

I was looking for information about this stone too. I emailed the website that the chart came from and was told that Moor is a company that makes wood carving tools, and they used to offer a sharpening system with a red and a white hone. Unfortunately, it's no longer in production

Kindest regards,
Alex

I emailed the company that supposedly made this hone, the guy who runs it said that he never made a 12k hone. They do retail a 4"x 2" ceramic stone available in 8000 and 800 US grit, but no 12k and no red hone.

Kindest regards,
Alex

is sharpening with an aluminum oxide bar bad?

This is an old resurrection...

what grit is it? More than likely it's a real, and I mean Real rough stone...not for razors. About as course of a stone you need to use on a straight is normally 1000 grit, then we go on upwards...

So would soft white arknsas equate to @ 8K grit according to the chart? I ask because I have a Col. Ichabod Conk. labelled, "Surgical Arkansas" & wondering what the grit level was?

I've heard, or rather read, that Lynn hasn't had much luck with arkansas stones. That was enough for me to not be interested in them when it comes to razors. Just pick up some waterstones, nani's, or shaptons...