Authentic set of Premium Mikawa Shiro Nagura sourced from Sakamoto San. This set includes 3 larger and high performance Nagura tested for quality and matched for use in progression. The Botan, while smaller is a rare Tokyu striped piece. The Tenjou is rare white Betsuju and larger at 172 grams. The large, rare striped Mejiro finishes this rare and premium quality set.
We have tested each nagura for quality, and carefully matched them for use in progression. In addition all sides except the rubbing surface have been coated with cashew lacquer to protect the nagura from water infiltration / deterioration over time.
Weights and notes:
Botan - 124g
Very interesting and unique Botan. It's very large and there is enough surface area to hone directly on. This one is stamped Betsuju, meaning White and irregular shape. This one clearly has orange and yellow spots covering half of the flattened surface. Beautiful, rare and Unique Nagura.
Tenjou - 172g
Tokyu meaning Striped and irregular shape.
Mejiro - 202g:
Tokyu meaning Striped and irregular shaped.
Use:
Mikawa Nagura stones—Botan, Tenjou, and Mejiro—are natural Japanese honing stones used in progression to sharpen and polish blades with precision. These stones, mined in the Mikawa region, are highly valued for their ability to refine cutting edges, making them indispensable for straight razors, knives, and fine tools.
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Botan (Coarse Grit): The coarsest Nagura, Botan is used to remove scratches from previous sharpening stages and establish a foundational edge. Its thick slurry works efficiently to refine rough edges and prepare them for further polishing.
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Tenjou (Medium Grit): As a medium-grit Nagura, Tenjou transitions the sharpening process, smoothing the edge further after the Botan stage. It produces a finer slurry that reduces micro-serrations and prepares the blade for fine finishing.
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Mejiro (Fine Grit): Mejiro is a fine-grit Nagura used to refine the edge to near perfection. Its fine slurry creates a smooth and sharp edge, leaving the blade ready for ultra-fine finishing stones.
These stones are applied by rubbing them on a hard base whetstone to create a slurry, essential for the sharpening process. When used sequentially, Mikawa Nagura stones ensure a sharp, mirror-polished edge, combining tradition and functionality for exceptional results.
