Miyagoshi Syouki #3000 ceramic stone

Miyagoshi Syouki 3000 – Finishing Stone for sharpening (#3000)

Miyagoshi Seito (宮越製陶) is a Japanese manufacturer based in Kyoto, specializing in the handcrafted production of sharpening stones using the vitrification method. The Syouki 3000 model is a high-end finishing stone, designed for the final stage of sharpening, where precision and smoothness of the cutting edge are crucial to achieving full sharpness.

The production process uses high-purity aluminum oxide (Al₂O₃) abrasives, which are bound into a structure using a high-temperature molten binder. The whole is formed under high pressure and then fired at a temperature reaching 1300°C. The resulting stone is characterized by high durability, resistance to chemical and atmospheric factors, and very stable working flatness.

Application of #3000 grit

#3000 grit (grain size approx. 4.5 microns) is used for the final stage of sharpening – smoothing the blade surface, removing burrs, and improving the sharpness and finish of the edge. This stone is ideal for:

• after sharpening with 400–1000 grit,
  
• for kitchen knives, craft tools, and steels of varying hardness,
  
• in applications where not only sharpness, but also edge durability is important.
  

Characteristic features:

• handmade in a small workshop in Kyoto – precision and quality under full control,
• made using vitrification technology – glass sintering ensuring durability and resistance,
• constant exposure of fresh abrasive grains thanks to its porous structure,
• extremely stable surface – minimal need for flattenning,
• resistance to storage conditions – can be kept in moisture without fear of degradation,
• delicate, light surface – white color.

Specifications:

• Brand: Miyagoshi Seito (宮越製陶)
  
• Product name: Miyagoshi Syouki 3000
  
• Type: finishing stone for sharpening
  
• Grit size: #3000
  
• Average grain size: approx. 4.5 microns
  
• Abrasive: aluminum oxide (Al₂O₃)
  
• Binder: vitrified bond
  
• Production method: high-pressure molding, fired at ~1300°C, porous structure
  
• Color: white
  
• Dimensions: approx. 205 × 75 × 25 mm
  
• Weight: approx. 800–900 g
  
• Origin (Made in): Kyoto, Japan