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I ended up finding something useful...

 


in terms of the heating process, this was listed on a Japanese website and was translated by Google so it's not perfect but still well understandable:
'Feature
* Steel is mainly used SKD11 (D2 steel)
- Used primarily to sheath Kaidekkusu
* Handle material Maikaruta, carbon, G10 resin used in plastics industry and engineers
How to finish - mostly Burasutofinisshu
　Black finish separately ※, hair line, can mirror finish
· RID series represented by the LED base is looking at us from electronic components, using all my own full custom circuit to base

Recipe
- Cut from the cutting of steel
After the cutting process - made a hardened, about 58 Rockwell hardness - 59 (D2 steel case)'

As you can see from above, he heats the steel to 58-59 Rockwell which falls directly in the sweet spot you mention, so I think there shouldn't be any unexpected surprises.

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Nemoto Knife by Nemoto Tomoyuki

 
By: AuHavrePro : September 22nd, 2010-05:15
As I am well aware that there are many knife enthusiasts on this forum I wanted to share something new to me (surely not new to some members). I have discovered my definitive favorite knife maker - Nemoto Tomoyuki-san (Japan). I am in the process of learn...  

After watches...

 
By: masterspiece : September 22nd, 2010-12:13
I find Samurai swords and knives amazing! Thanks for the pix. Aloha, Bob

re: Nemoto Knife

 
By: DRMW : September 22nd, 2010-14:55
Interesting designs. I've seen others use the carbon laminated layered blades before, is there a certain type of steel he works with? They look pretty but do they work well? -MW

+1, MW

 
By: BDLJ : September 22nd, 2010-16:52
Rather striking designs, but when you see sheets of CFRP edge-on at the hilt of a knife....hmmm. Though, I do like that machete....

Entirely valid

 
By: AuHavrePro : September 23rd, 2010-01:39
questions MW, this is something I am also interested in hearing, sadly today was extremely busy so I wasn't able to do further research, if I find anything in more detail I will promptly post it. It definitely seems like Tomoyuki-san is regarded as a pers... 

Here's some info...

 
By: AuHavrePro : September 24th, 2010-02:21
From what I was able to read and understand using Google Translate, he (and his two other employees) manufactures most of the blades out of D2 steel and then applies various finishes. This steel is described as follows: 'D2 steel is a steel that is vacuum...  

D2

 
By: nickd : September 24th, 2010-05:14
As you say, D2 is an old, classic steel for dies etc. It's a very "old fashioned" steel by modern knife making standards, and for many people it's been superceded by the new crucible steels. On the otherhand, some people swear by it. It gives a grainy edg... 

That's some

 
By: AuHavrePro : September 24th, 2010-14:22
great info, thanks a lot for sharing, I do wonder what kind of heat treatment he puts the blades through, haven't come across that yet so if I find this anywhere I will post. Best Regards!

I ended up finding something useful...

 
By: AuHavrePro : September 24th, 2010-22:55
in terms of the heating process, this was listed on a Japanese website and was translated by Google so it's not perfect but still well understandable: 'Feature * Steel is mainly used SKD11 (D2 steel) - Used primarily to sheath Kaidekkusu * Handle material... 

would you be so kind and

 
By: Carlfa : September 24th, 2010-21:11
let me know where someone can buy Mr. Nemoto knife? I am also interested in collecting knifes. Thank you (you can send me private email)

Purchase options.......

 
By: AuHavrePro : September 24th, 2010-22:30
******Please correspond purchase info via PM****** This message has been edited by DRMW on 2010-09-24 23:35:52

Adamska,

 
By: Carlfa : September 25th, 2010-08:40
can you please send me private email? Thank you Carl

Here is

 
By: AuHavrePro : September 28th, 2010-03:14
a slightly better photo of the Nemoto Tomoyuki made katana: (it was designed by Mr. Yoji Shinkawa, art director for MGS)...  

Information on handle/grip material...

 
By: AuHavrePro : September 24th, 2010-21:57
I also wanted to share that Mr. Tomoyuki uses mostly G10 composite material for the knife handles/grips. Listed below are the properties of this material: 'G-10/FR-4 is a thermosetting industrial laminate consisting of a continuous filament glass cloth ma... 

Some additional photos.......

 
By: AuHavrePro : September 24th, 2010-23:55
of Tomoyuki-san himself and his workshop where these marvels become a reality:...