100K Diamond Stone Sharpening Progression from 400 grit to 12K (Part 1) | 10万番のダイヤモンド砥石での包丁研ぎ part1

Part 2
   • Will It Pass The Test? 100,000 Grit D...  

A 100,000 grit diamond stone sharpening!

🙏Special Thanks
Niko Hynninen
  / ）  
Naader Far
  / ao.renge  
NSK Kogyo
  / nskgoto  

🏠NSK Kogyo Diamond Sharpening Stone - Komon
https://komonjapan.com/collections/ns...

We recently had the opportunity to try out a 100,000 grit diamond sharpening stone from NSK Kogyo, a company I've always trusted for my sharpening needs. This ultra-fine grit stone was originally produced as a test product, and I was fortunate enough to be able to borrow it for a special trial.

Starting off with the Hakuto 400 grit stone, which I recently incorporated into my lower grit sharpening, I gradually progressed to the 100,000 grit stone for the ultimate fine-tuning of the edge.

Originally, we had planned to document the entire sharpening process in a single video, but considering the extensive duration (over an hour), we've decided to split it into two separate videos for better clarity and ease of viewing.

Stay tuned for the next video, where I'll dive into the intricate process of sharpening with the 100K grit stone! It'll be up on the channel next week!


包丁研ぎ歴25年、現在は日本三代包丁産地である大阪府堺市で包丁会社に勤めているカナダ人です。

今回はNSK工業の試作品である、100,000番のダイヤモンド砥石を使った研ぎです。
10万番を制作されたと聞いたときは驚きました。主に鉋職人の方に注目されているようです。包丁の研ぎに使うには固めな砥石で難しい研ぎでしたが、400番から順に研いでみました。それぞれの粒度でどのような違いがあったのか、テストも行なっています。
一本の動画にまとめるには1時間と長尺になってしまったため、二本の動画に分けています。

今回の試作品をお貸しいただきましたNSK工業様、いつも本当にありがとうございます。


[ Previous Recommended Videos ]
🌟Who is Ivan?
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🌟My Sharpening Work - Kurouchi Gyuto Sharpening from Blacksmith until Natural Stone Sharpening by Ivan
   • Natural Stone Polishing for Kurouchi ...  

🌟My Sharpening Stone - NSK Kogyo Diamond Stone
   • An Introduction to NSK KOGYO Diamond ...  



Hello, we, Ivan and Yuka have a unique experience of Japan through our business and life such as rich Japanese culture, exquisite crafts, breathtaking natural landscapes, beautiful foods and exciting travel, we share what we feel through our business and our lives. By sharing such our experiences, we hope that you will enjoy through our videos!


📷Instagram
  / ivanyuka_japan  


00:48 - OP
01:44 - CRUCIBLE WOOTZ - Testing Blade
03:01 - Stone Progression - 400 to 100K
04:02 - Four Edge Test Plan
06:19 - 400 Grit - Sharpening
08:33 - 400 Grit - Digital Microscope
09:46 - 400 Grit - Paper Cut
11:16 - 400 Grit - Carrot Cut
11:56 - 400 Grit - Sashimi Cut
13:08 - 1500 Grit - Digital Microscope
14:01 - 1500 Grit - Paper Cut
14:46 - 1500 Grit - Carrot Cut
15:23 - 1500 Grit - Sashimi Cut
16:12 - 12000 Grit - Sharpening
18:46 - 12000 Grit - Digital Microscope
20:14 - 12000 Grit - Paper Cut
20:59 - 12000 Grit - Carrot Cut
22:03 - 12000 Grit - Sashimi Cut
24:51 - Tasting Time