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Natsuya #001

Natsuya #001

$285.00 USD
$285.00 USD
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dimensions

Dimensions: 180 x 64 x 45mm
Weight: 1,376.0 g

Natsuya (夏屋) stones are renowned natural medium-grit hones (chu-to), typically comparable by feel to approx 800–1000 grit synthetics. Prized for setting edges, cleaning up scratches from coarse stones, and preparing bevels before fine finishing. It sits right on the border between Arato (coarse stones) and Nakata (Medium range stones) making it a great stone to bridge the gap between coarse scratch removal and on to fine polishing.

Key Characteristics of Natsuya:

Grit Range & Function: Unlike fine finishing hones (Awasedo), Natsuya functions primarily as a medium-grit cutter (Chu-to). It acts as a bridge between coarse grinding and fine polishing.

Slurry & Cut: It breaks down to form a rich, slurry quickly, making it fast-cutting and forgiving to use on wider bevels.

Finish: Leaves a uniform, silky matte finish on iron cladding and carbon steel, perfect for setting up a clean foundation before moving to stones like Aizu-to and finer.

care instructions

​Initial Inspection & Cleaning: Before use, gently inspect your Japanese natural whetstone (JNAT) for any loose grit or debris, and wash the surface with clean water and a soft brush.
​Soaking Guidelines: Understand your specific stone's hardness; softer stones (like Aizu or Amakusa) generally require a brief soak of 10 to 20 minutes, while harder, finer finishing stones (like Tomae or Suita) often perform best as splash-and-go stones requiring only surface hydration.
​Avoiding Thermal Shock: Never submerge a cold or dry stone in hot water, and avoid exposing your JNAT to extreme temperature shifts, which can cause cracking or structural failure.
​Slurry Generation: Build a natural abrasive slurry using a diamond plate, coarse stone, or a matching nagura (such as a Tsushima Nagura) to jump-start cutting action and condition the surface for your blade steel.
​Water Maintenance: Keep the stone adequately lubricated with clean water throughout the sharpening session, periodically rinsing away accumulated swarf to maintain optimal feedback and cutting speed.
​Drying Process: After sharpening, rinse the stone thoroughly under clean running water and allow it to dry completely in a well-ventilated, shaded area away from direct sunlight and artificial heat sources.
​Long-Term Storage: Store your dried JNAT in a stable environment where it won't be subjected to heavy impacts, freezing temperatures, or high humidity fluctuations that could compromise its integrity.

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