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 Post subject: Natural Stones
PostPosted: Mon May 27, 2013 4:19 pm 

Joined: Fri Jun 29, 2012 11:56 am
Posts: 211
Location: Austin, TX
Ok, so before I ask my question, I am aware that by even asking I am in trouble . . . this may become a very expensive hobby. :roll: :roll:

I have an excellent selection of synthetic stones and only one natural stone. My only natural stone is a Ozuku Asagi (Koppa) and since it is a very fine polishing level stone, my natural experience is extremely limited. I would like to consider a progression of stones starting around the 1k level and progressing to around 8k. I do understand that with naturals there is no fixed grit levels, I am including this simply to frame the range I am interested in.

Just like the rest of the folks on this site, I sharpen a large variety of knives for myself and others. I am looking at the natural stones for the harder steel knives, not so much the German stuff.

Finally, I am wondering if I should simply get a finishing natural stone and use my synthetic stones for the majority of the work.

Ok, so please provide me with your suggestions for both a progression and one or two finishing stones depending on your perspective.



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 Post subject: Re: Natural Stones
PostPosted: Mon May 27, 2013 6:02 pm 
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We are on the same wavelength. I just got done doing a series of videos on a Moritaka gyuto, starting with a 180 grit Nubatama for removing the initial scratches from the rough finish using some either Atoma 140 or XXC scratches.. After that I did an all natural sequence as follows, introducing a few new stones:

Ohmura (Kyushu Ohmura)
Tajima
Meara
Yaginoshima Asagi
Shinden suita.

IT came out VERY nicely.

I did want to add a few other stones that I show in the first video, but this was the progression I settled on. The other stones included an Amakusa, a Wachi Aoto, a Nakayama Asagi and a Nakayama Iromono. The final edge on the Shinden Suita was just too nice to go further :)

While these work quite nicely for the Japanese knives, they certainly will work on softer German knives too.

I should have these posted in the next few days.

If you want some more detail about natural stones, just email me @ ksskss at earthlink dot net or call at 209 612 2790 and leave your phone number and I'll return the call. It might be a long call :)

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Ken



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 Post subject: Re: Natural Stones
PostPosted: Mon May 27, 2013 6:30 pm 

Joined: Tue May 29, 2012 12:29 am
Posts: 888
Thinking about picking up a Amakusa after seeing the glowing reviews. Thoughts?


I would recommend adding in a Aoto if you have never tried one.


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 Post subject: Re: Natural Stones
PostPosted: Mon May 27, 2013 10:08 pm 
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The sequence I did is certainly not the only natural sequence, just a good sequence that worked out well and gave me a chance to show off some stones.

I'm a big aoto fan. Perhaps next time I'll use the Wachi Aoto in the next sequence I do. A litlle harder and finer than the Aono or Monzen.

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 Post subject: Re: Natural Stones
PostPosted: Tue May 28, 2013 4:38 am 
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I fell down the J Nat hole myself, but I have been finding myself using only a few lately. I have a Kyushu Ohmura that I rarely use, an Amakasu J Nat, again, rarely used, an Aoto that is around 3-5K and a bit harder than other Aoto's. I also have a Synthetic Blue Aoto from CKTG that I use as well, much softer than my J nat Aoto! After the Aoto's, I have a Meara, 2 different Takashima's, Yaginoshima Asagi, and Ozuka Asagi Koppa. I follow up with a leather strop to deburr after each grit. I usually use a Latte 400 and Bester 1200 to start an edge bevel, then a Aoto and Shobu. I will often stop at the Shobu unless I want a really crazy sharp edge. Knives that see meat slicing duties I stop at the Shobu usually, or the Aoto. The Meara may replace the Shobu.

If I am doing a Kasumi progression, I use the Latte 400, King 800, Synthetic Blue Aoto and then stopped there. The Yaginoshima Asagi is my next step from there now that I have it! I tried it on my Tojiro Itk Kiritsuke that I left off at the Synthetic Blue Aoto and it left a beautiful finish and contrast and I could see layers in the cladding!

I would look for a good Aoto and then the Meara. If you want the kasumi finish, get the Yaginoshima Asagi.


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 Post subject: Re: Natural Stones
PostPosted: Tue May 28, 2013 8:23 am 
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I finished uploading the sequence and will post it in a separate thread in the videos section ...

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 Post subject: Re: Natural Stones
PostPosted: Wed May 29, 2013 4:11 am 
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Here's the link to it :

moritaka-gyuto-japanese-natural-stone-sharpening-t2838.html

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