Jump to content
  • JNAT 07 Hatanaka Umegahata Awasedo

       (0 reviews)

    • keep

    Vendor Description

    Vintage Hatanaka Umegahata Awasedo Japanese Natural Sharpening Stone 1188g (2lb. 10oz.)

    It is in Hatanaka paper box, and sticker, and stamps. It is very nice condition under the paper sticker (no damage or lines or unwanted objects). Hatanaka Toishi Co., used to sell lots of variety of the natural sharpening stones included in Nakayama maruka. I do not know which mine it was from. According to the sticker on the sharpening stone, it is from Umegahata, so it could be Nakayama, Okudo, Narutaki, Shobu, etc

    206mmX76mmX31-35mm It should be great for high carbon cooking knife or Japanese plane or chisel or razor

    Hardness------- 8.6

    It raises great amount of black color slurry quickly.

    (Scale; 1 to 10, 1-3 is very soft muddy rough grit whetstone 3-6 is soft medium grit whetstone, 6-8 is hard medium grit whetstone, 8-10 is fine grit whetstone)

    Particle Size------ 9.0

    (Scale; 1 to 10, 1-3 give deep scratch marks to the steel, 3-5 is delete the 1-3 scratches, 5-8 makes the steel cloudy, 8-10 makes the steel semi-mirror finish or mirror finish)

    It makes my blue II steel blade knife Jigane to semi-mirror finish, and Hagane became mirror finish. It looks like high quality Nakayama.

    Probably around from 10000 grit or higher. Natural whetstone has wider capacity than artificial whetstone, and actually, we do not know until sharpen blade on the hone for a while. Because artificial whetstone molecules do not break down to smaller sizes, but Natural whetstone molecules are possible to break down to smaller sizes, and those molecules are mixed with sharpened steel molecules, and make Jigane as suitable Jigane color (it also shows Damascus pattern vividly), and Hagane as suitable Hagane color. It is natural mystics.










    Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.


  • Latest Updates

  • Heljestrand


    heljestrand sizes copy.png



    Condition: hair moistened, tip out/root in

    HHT-0 - shave: The hair can be shaved immediately at the holding point. This is strictly spoken not a true HHT, but it does tell us that the edge is capable of shaving. [all other attempts must be made at least half an inch from the holding point]

    HHT-1 - violin : The hair doesn't cut, but it "plays violin" with the edge. This is due to the shingles catching the edge, but it's not sharp enough to penetrate. On a full hollow razor, a faint ringing sound can be heard. On all razors it can be felt with the fingertips that hold the hair.

    HHT-2 - split: When it is dragged across the edge, the edge catches the hair and splits it lengthwise.

    HHT-3 - catch&pop: When it is dragged across the edge a bit, the edge catches the hair and pops it. The severed part will jump away.

    HHT-4 - pop: The hair is popped immediately when it touches the edge. It still jumps away.

    HHT-5 - silent slicer: The hair falls silently as soon as it touches the edge.

    source: http://coticule.be/hanging-hair-test.html

    Scale Patterns

    Coup Choux Club


  • Create New...

Important Information

Terms of Use and Guidelines apply to use of this site.