Toishi (or Sharpening stone) works
― Sharpening stone Power―
Adopting the Vitrified
Method for performance
１.Stirring
２.High temperature and high pressure pressing
３.Firing
４.Completion
Polished surface with 400 grid size
Polished surface with 1200 grid size
■Electron microscope image (Aoi 1200)
Polished surface with 3000 grid size
■Electron Microscope Image (Shoki 3000)
What's the difference if it's sharpening stones by vitrified method ?
Resistant to water
High performance even in extremely cold and hot climates
Can be used with chemicals (acid and alkali resistant)
Can be used for a long time without deterioration over time
Miyakoshi's sharpening stones have a high ratio of abrasives.
This is why more than 75% of the abrasive grains directly contact the blade.
Sharpening stones
Miyakoshi's Sharpening stones
Manufactured using the vitrified method
Sharpening stonemade by resinoid method
Resin-based
Sharpening stone made by magnesia method
Cement-based
Natural sharpening stone
(mined from the sharpening stone layer)
Uchigumori, Suita
Tozen (a plane finished with a large abrasive stone)
Diamond sharpening stone
We can make the sharpening stone of your choice!
Miyakoshi Seito has been manufacturing grinding wheels with excellent abrasive power since the beginning of the company, incorporating the voices of our customers.
Please feel free to ask us about industrial grinding wheels, etc., which can be made to your desired hardness size with abrasive grains of #46-#6000.
Click here to contact us.
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宮越製砥株式会社
Miyagoshi Seito Ltd.
〒601-8045
京都府京都市南区東九条西明田町26番地
26 Nishi Akidacho, Higashikujyo,, Minami-ku, Kyoto-shi, Kyoto〒601-8045
TEL：
075-691-8296
FAX：075-691-3536
© 2021 Miyakoshi Seito Ltd.