30,000 grit stone

[laurens ch]

Couldn’t believe it when I saw it and I thought my 8000 stone put a sharp edge on my tools

Here it is a 30,000 grit stone

http://www.japanwoodworker.com/product.asp?s=JapanWoodworker&pf_id=01.023.0000&dept_id=13253

 

[-Switch-]

$475.00?!? :yikes:

I think I'll stick with my £5 sharpening kit and put up with my tools being just very sharp.

And just imagine the polish that stone would put on the edge! I wouldn't want to strop for fear of dulling it

 

[addyb]

As far as I know, Japanese waterstones use a different grit rating system that those of us "In the west." At the moment I'm unable to find a URL with a comparison table, but I might be able to find one later today. Your 30,000 grit Japanese rating might be a completely different rating with an arkansas stone.

Adam

Edit at 8.25am: Here'a link for you. Scroll down a bit and you'll see a comparison of grit ratings on stones. Good luck with "scary sharp!"

 

[Ryan Woods]

nearly $500. How much is that per grit!

 

[laurens ch]

Even with the grit difference it still works out super super fine(thanks for the link ).I don't have the stone by the way its too expensive for me, if they were to make it avaible in a credit card sized slip stone I could probably afford it. My 8000 grit Japanese stone leaves the bevel like a mirror so I can only imagine what the finish 30,000 would leave.

 

[Mad Mike]

Good link on grits thanks

Are USA & UK grits the same ?

are grits for stones & wet & dry paper the same ?

my dimond stones are given in microns

 

[-Switch-]

It's all a bit complicated really isn't it?

I just look at the grit number and think: less 0's = less work, more 0's = more shine

Mind you, all my sharpening is done with the same brand wet'n'dry so I don't have to worry about comparing grit charts and calculating grit to micron conversions because of mixed types of kit.

 

[OldJimbo]

It's probably a great piece of kit for that much money... but;
I do fine with a block of 0.5 micron chromium oxide buffing compound, even for straight razors that I shave with. $10 and I've been able to give away chunks to last people for years and I still have a lifetime supply left. Real razor fanatics might spend $20 on diamond paste to put on a sharpening strop. Razor collectors might get three strops so they can load with 1 micron, 0.5 micron and 0.25 micron diamond grits, to fix up antiques - maybe $150.
I'd figure the stone is expensive compared to what we know works well.

 

[wizard]

I have a 12,000 grit Japanese waterstone, about as fine as you would ever need. I think it was less than $40 US from Japan Woodworker. Great to do business with BTW.
I use the 12000 grit to get that last polish before stropping. You need a small Nagura stone to get a slurry up on the really fine waterstones and they really smooth the edge.
I agree, I think the Japanese waterstone grit rating differ from say diamond or Arkansas stones.
If you look about on Japan Woodworkers site, there are some good prices on combination stones and others. Why some are less by far than others, I have no idea! Cheers!

 

[Shinken]

I just look at the grit number and think: less 0's = less work, more 0's = more shine

So in that case a 100 grit stone will polish better than 99990 grit stone!

LOL

Sorry just being a clever **** now

 

[Jan Ververs]

The text says that you'll need a razor sharp edge before using this 30000 grit stone. If you have already a razor sharp edge, why sharpening anymore?

 

[running bare]

aaaah, but it does describe it as a SUPER POLISHING STONE rather than a sharpening stone either way its damned expensive

 

[-Switch-]

The text says that you'll need a razor sharp edge before using this 30000 grit stone. If you have already a razor sharp edge, why sharpening anymore?

Because a 'razor' edge is no where near as sharp as it's possible to get. I've seen a knife cut through a phone book with just the weight of the blade behind it
I've no idea how to get a knife that sharp though. I suspect you'd need a particular kind of steel with a certain grind and a very good polish to eliminate any friction as the knife cuts. And that'd be where your 30,000 grit stone comes in.
It's an ambition of mine to get a blade that sharp one day