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Kizuyama Asagi Tomae C_KIZ_60_4

Kizuyama Asagi Tomae C_KIZ_60_4

$465.00 USD
$465.00 USD
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dimensions

208mm x 76mm x35mm
Weight: 1427g

Kizuyama Asagi Tomae C_KIZ_60_4

Classification & Origin:
Mine: Kizuyama, an Eastern mine (Higashi-mono) of Kyoto known for producing stones with exceptional cutting bite and fine, creamy feedback.
Stratum: Tomae, characterized by dense, fine sediment structure and strong polish/finishing capability.
Size Format: Full-size bench stone measuring 208mm × 76mm × 35mm at a substantial 1,427 grams—a true full-sized workshop block.
Stamp: Features the Kyoto specialty seal (Kyoto Tokusan) and authentic mine/distributor calligraphic ink marks.


Physical & Visual Characteristics:
Color: Ash-olive / khaki-grey (Asagi  tone) with subtle warm undertones typical of deep-mine Tomae layers.
Top surface: Flattened and prepped.
Profile & Flanks: Parallel gang-saw crosscut marks on the edges, with natural quarry skin (kawa) and raw iron-tinted crust visible on the bottom reverse and lower edges. 

 

Performance & Working Evaluation:
Hardness: Lv 4 to 4.5+ (solid, firm surface that resists dishing while self-slurrying slowly or with a diamond plate/Tomo nagura).
Finesse: Approx. 8,000–12,000+ grit, producing a refined, hazy kasumi contrast on clad kitchen knives and crisp, toothy edges on high-carbon cutlery, razors (kamisori), and woodworking tools (kanna/nomi).
Ergonomics: At 76mm wide and over 200mm long, it provides the full surface area needed for wide bevel work and full razor/plane blade sweeps without falling off the edge.
Flaws, Structural Risks & Imperfections:
Diagonal Surface Fissures (Suji): Two distinct diagonal lines cross the upper working face. These do not feel toxic or "hitting" but as this is a natiral material care must be taken to inspect them over time.   
Perimeter Spall / Missing Shoulder: A noticeable natural notch/indentation along the left perimeter slightly reduces width in the upper third.  
Lacquer sealed:  The flanks and back are completely sealed. 
Minor Edge/Corner Chips: Small step-fractures along the lower base and corners from quarry splitting/handling.  

care instructions

1. Preparation & Water Management
Splash-and-Go Only: Never soak your natural finishing stone in a water bath. Prolonged submersion softens the natural binders and risks cracking or delamination along natural mineral lines.
Surface Wetting: Mist or splash clean water onto the working face just before sharpening. Add water sparingly throughout your session to maintain a slick working surface.
Bench Placement: Place the stone on a non-slip rubber base or a dedicated wooden stone holder with gentle clamping pressure.
2. Slurry Generation & Sharpening
Soft to Medium Stones (Hardness 2.5–3.5): These stones naturally release their own slurry under light blade pressure. Let the auto-generated mud do the work; do not wash it away mid-session.
b Use a diamond plate (such as an Atoma 1200), a clean Tomo Nagura, or a Mikawa Nagura to raise a thin, milky slurry in 5 to 10 light circular passes before laying your blade flat.
Pressure & Technique: Maintain light, even pressure. Allow the semi-rounded silica particles in the slurry to break down naturally—this self-refining action creates the signature toothy edge and cloudy kasumi finish.
Slurry Thickness: If the mud becomes too sticky or pasty, add a few drops of water. If it is too thin, work the stone lightly to concentrate the abrasive particles.
3. Cleaning, Drying & Long-Term Care
Rinse Clean: When finished, gently rinse off steel swarf and residual slurry using room-temperature tap water. Do not use dish soap, detergents, or hot water.
Air Dry Indirectly: Wipe the stone dry with a clean towel and allow it to dry completely at room temperature, away from direct sunlight, heating vents, fans, or freeze-thaw cycles.
Storage: Store the completely dry stone flat on a shelf in a climate-controlled room. Avoid enclosing a damp stone in an airtight plastic box.
Edge Lapping: Keep the working surface flat by lightly dressing it with a fine diamond plate (Atoma 1200 or 400) under running water when dish patterns begin to form. Chamfer the outer top perimeter edges lightly to prevent edge chipping during blade passes.

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