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Ipponmatsu Tomae Daitsuki #401574id

Ipponmatsu Tomae Daitsuki #401574id

$95.00 USD
$95.00 USD
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Materials

dimensions

Stone measures approx: 160mm x30mm x17mm
Wood Daitsuki: 170mm x35mm x25mm
Weight:271g

Ipponmatsu Tomae Daitsuki 

Mine & Geological Origin: Ipponmatsu , located in the Western/Tanba (Nishimono) mining district of Kyoto.
Stratum & Type: Tomae stratum, classified as an Awasedo  finishing stone.
Form Factor & Dimensions: Razor / chisel hone (kamisori-toishi format) mounted on a custom wooden base (daitsuki); 160 mm length × 30 mm width × 25 mm total height (stone thickness measures approximately 8–10 mm across the bed); total weight is 271 g including base.
Coloration & Visual Features: Muted greenish-grey Asagi / pale olive ground with prominent diagonal reddish-purple Yake (iron oxidation / baked cloud) banding running across the center of the honing face; shop seal (Hibiki) stamped cleanly on the wooden base.
Grit & Fineness Rating: Approximately #6,000–#8,000 JIS equivalent; produces an aggressive, refined working edge with high polish potential on tool steel.
Hardness & Density: Level 3.5 to 4.0; firm structure with sufficient self-slurry generation under light pressure, eliminating the absolute necessity of a diamond plate or nagura to start cutting.
Surface Inclusions & Flaws:
Linear diagonal color demarcation (Yake seam) across the face; visually striking, non-structural, and flush with the matrix with no toxic quartz/silica feel (kesuji).
Minor natural crust/bark and irregular saw cut visible on the far end face where the stone meets the wooden mount.
Thin stone profile (approx. 8–10 mm depth above the wood), making the dai mounting essential to prevent lateral fracture under downward pressure.
Narrow 30 mm track width, restricting standard push-pull strokes for broad kitchen cutlery; primarily optimized for straight razors, pocket knives, carving gouges, and woodworking joinery tools.

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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