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Kas yra Toma Nagura?

Toma Nagura (砥間名倉) — tai tradicinis japoniškas natūralus pagalbinis akmuo, naudojamas suspensijai suformuoti ant pagrindinio galandinimo akmens paviršiaus. Pati sąvoka „nagura“ reiškia „trynimo akmenį“, o „Toma“ yra viena iš senųjų, klasikinių rūšių. Toma Nagura buvo išgaunama įvairiose Japonijos vietose, bet šiandien žinomos kokybiškos senosios Toma Nagura kasyklos jau uždarytos, o likę pavyzdžiai labai vertinami. Senajame […]

Asano Mikawa Nagura: Tradicija, Sistema ir Naudojimas

Japoniškų natūralių galandinimo akmenų pasaulyje Nagura akmenys užima ypatingą vietą. Jie nėra pagrindiniai galandinimo akmenys, bet skirti abrazyvinei suspensijai sukurti ant pagrindinio akmens paviršiaus, tokiu būdu išplečiant ir praturtinant galandinimo galimybes. Tarp jų — bene žinomiausia ir labiausiai vertinama sistema yra Asano Mikawa Nagura, kuri išsiskiria ne tik kokybe, bet ir apgalvota progresijos struktūra. Kas […]

The best natural Japanese sharpening stones

Natural Japanese sharpening stones, called tennen toishi, are highly prized by chefs, woodworkers and knife enthusiasts for their unique sharpening properties. Quarried from historic Japanese quarries, these stones offer a unique tactile, organic sharpening experience that synthetic stones often cannot replicate. Their ability to create extremely sharp and long-lasting blades with a refined, polished finish makes [...]

Layers of Japanese sharpening whetstone mines

Japanese natural sharpening stones (toishi, 砥石) are valued not only for their mines of origin, but also for the specific geological strata (strata layers) from which they are extracted. Each layer, or sō (層), has unique physical and abrasive properties that determine the stone's suitability for different sharpening stages, from coarse grinding to mirror polishing. These layers, often identified [...]

Natural Japanese sharpening whetstones: mine characteristics and significance

Japanese natural sharpening stones, also known as toishi (砥石), are not only tools, but also a cultural heritage, valued around the world for their unique grinding qualities and aesthetic. These stones, extracted from mines around Kyoto, are divided into eastern (Higashi Mono, 東モン) and western (Nishi Mono, 西モン) groups, according to their geographical location around Mount Atagoyama. Each [...]

Why choose natural Japanese stones for sharpening?

Natural Japanese whetstones (天然砥石, tennen toishi) are valued for several main reasons: 1. Highest quality and unique properties Japanese natural stones are extracted from old mines that have been used for centuries. Each stone has a unique combination of minerals that allows for an extremely precise cutting edge. 2. Excellent grinding feel (feedback) These stones provide a clear and subtle feedback […]

Nakayama Japanese Natural Sharpening Finishing Stones

Nakayama is the most famous of Japan's natural finishing stone mines, due in part to the ancient history surrounding the mine, the marketing skills of the previous owners, and the extremely fine quality of the stones. Kato-san, who owned the mine from the 1950s to the late 1960s, stamped many of his stones with his own personal ink stamp, while most other miners simply wholesaled […]

What is the difference between natural and artificial whetstone?

The difference between natural and artificial whetstone work No matter which way you sharpen with an artificial stone, the scratches on hard and softer steel will be basically the same. Artificial whetstones can be sharpened relatively quickly, but they are too abrasive and create grooves that are difficult to remove, making it difficult to get a long-lasting cutting edge. […]

What is special about natural Japanese whetstones?

Natural Japanese sharpening stones are unique natural wonders that have been used in Japan for thousands of years to sharpen knives and grinding stones. Also known as 'toishi' or 'jnats', these stones are made from natural rocks that have special properties that make them perfect for sharpening. One of the main reasons why Japanese sharpening stones are so valuable is that [...]