Thread: Japanese whetstone sharpening stone #15000 grit / resinoid metalmaster stone

Hi, I was wondering if anyone has used the 15k stone found here>>Japanese Whetstone Sharpening Stone 15000 Grit Resinoid Metalmaster Stone | eBay I was thinking of buying this because of the price/grit. I have been considering the c12k or imperial la roccia. any info will help.

Thank you in advance,
Jim

I've tried it. It's maybe an 8K, certainly not a 15K. There might be 15K regions in the thing, but there are also a lot of giant particles which seem to have been added for cosmetic reasons. I wasn't able to determine if the purple bits or the greenish blobs were responsible, but it doesn't matter. The deep gouges this stone leaves in your bevel are visible without magnification. Not a desirable result from a finisher.

I dubbed this thing a "Hone Shaped Object" and tossed it in a junk box in case I ever need a gift to give to an enemy.

Originally Posted by Ecl

I've tried it. It's maybe an 8K, certainly not a 15K. There might be 15K regions in the thing, but there are also a lot of giant particles which seem to have been added for cosmetic reasons. I wasn't able to determine if the purple bits or the greenish blobs were responsible, but it doesn't matter. The deep gouges this stone leaves in your bevel are visible without magnification. Not a desirable result from a finisher.

I dubbed this thing a "Hone Shaped Object" and tossed it in a junk box in case I ever need a gift to give to an enemy.

Wow, that sounds pretty awful. Did you try to return it since it clearly does not match its description?

Originally Posted by JamesSr

I have been considering the c12k or imperial la roccia. any info will help.

First, could you please tell us what else you have or are considering getting? That would help us to advise you on what you should consider.

Just an FYI, the Chinese hone is a natural rock so don't consider it to be a 12k or any other k. Regarding the fraudia la rockia, in my opinion the hype from the shills should not be trusted.

Hi, I appreciate all the info guys. I'll give you guys a little background on me. I have been a carpenter for most my life, worked in a machine shop for some time always been hands on. I have been sharpening for years but razors is a whole new world to me. I catch on fast and have a knack for learning especially when I am passionate about something. I have been honing for no more than 3-4 months and I shave off my sharpening. I feel no tugging just nice swipes with the razor stroking between 1-2 inch long strokes. I have a Norton 220/1k, 4/8k, a few Coticules, one of them little thuringians that come in the wood box. I have a desire to keep climbing in grit. I get good shave off all my stones, I'm not claiming to be a master in fact I can only judge from my skills. Actually I did buy a "shave ready" razor of eBay which was claimed to be honed up to 16k but I surpassed that so I'm Leary on that being true. So pretty much I'd like to find a step up after the coticule. Once again I'd like to thank all you guys! It's awesome to have this support. I'm glad I didn't go with my impulse and buy that 15 k!!!

Looks like you are on very much the right path.

The Nortons - perfect.
Coticule and a boxed Thuri. Also perfect.


You have a few options but none of them are budget options.

Coticule is an odd stone, It sits in it's own band of finishing types and when you get the edges right on one the edge will feel buttery, Like there is no edge. You can improve the polish of a coticule edge with pastes. You can't use another hone after a coticule as the nature of the abrasive (fine garnet crystals) leaves a unique shaped finish on the edge. Using another stone removes the geometry that coti's create. It's why a Coti edge can feel as buttery but shave very well. You also have to be careful with just how abrasive your pastes are, Soft abrasive pastes like chrome oxide can be effective. Purist coti users sometime scoff at the idea of pastes after finishing with a coti!

There are several synthetics that will improve on an 8K norton edge.

The naniwa 12K is probably the most common. And the next stage after that is the Suehiro 20K. Sharpton also do the glass series that finish in very high numbers most of the people finishing with super high grits past 12K seem to be using the Suehiro.

Suehiro Gokumyo 20k | TomoNagura.Com | Keith V. Johnson

http://straightrazorpalace.com/hones...0k-review.html


Fine finishing naturals that are a safe bet and finish well are.

Translucent or Black Arkansas.
Zulu grey
A larger Thuri (would make finishing easier).
Japanese naturals (Jnats). I know very little about these.

Lapping film can be rated into astronomical grit ratings. There however is a stage where lapping film can take an edge beyond comfortable an into scary sharp.

Pastes can be purchased that work really well. All pastes need a dedicated strop or either canvas linen or leather. You can only use 1 grade of paste per strop so as to avoid contamination.

Chrome oxide is cheap and easy to get. The paste straight razor designs sell is some of the best. Kremer pigments also make a very fine powder pigment that can be used either dry or mixed with light oil to work as a paste.

CBN (cubic boron nitride) powder is also reported to be very good at leaving a smooth edge.

Diamond gets mixed reviews. If used very sparingly is can work brilliantly and very quickly. If you over strop on diamond pastes it can ruin an edge and make it harsh very quickly.


The truth be told, If you own multiple coti's and a thuri you are probably almost as high as you can go. It becomes a race for smoothness once you get the basics down, to get to a stage where you get totally smooth irritation free shaves. Buying more hones a this stage isn't for any other reason than to own them! We lovingly refer to this as HAD (Hone Acquisition Disorder). One of several collection based habits we often try to hide from our wives!

I dubbed this thing a "Hone Shaped Object" and tossed it in a junk box in case I ever need a gift to give to an enemy.

Now you can consider me an ennemy that needs punishment , so when you have time , send this Hone shaped 15 K object to me
You will feel much better when you dispose from it

Spend around $140ish for a 16K Shapton glass. Watch Glen's video on Shapton glass hones. The 16-K only takes about 5 or six laps to get a great polished edge. Strop, shave & there you go. I know it is a big investment, I am getting one near my birthday but I want to take my honing to that next level.
Shapton also has a 15-K hone in a different series for around $100.00

Dave "Slawman" Huffman

I was thinking about buying a shapton, I have been watching for them on eBay but I don't know much about them. I don't know much about them and I see the prices and especially their lapping plate price shocked me!! As far as I know about them they have a certain thickness of abrasive material backed by glass? Now not to ask dumb questions but do you have to have special lapping plates for them? I'm going to do more research on these but figured I'd ask you about it. I have another stone I bought and it's supposed to be a turkey stone. I'm going to throw some pics up for you guys to check out. The stone is really cool I used it a couple times and it seems to cut fairly fast for how fine it appears but I have learned not to judge a stone on touch alone. Anyhow I can't say enough about how much I appreciate you all!!!

You can lap a Shapton Glass stone on either diamond plates or wet/dry sandpaper but at 6 laps per finish, you don't need to do that very often!