Ohira Finishing Natural stone High Quality Ipponsen 40 Model

Imanishi is renowned for producing some of Japan's highest-quality sharpening stones, especially natural stones that are highly valued by sharpening professionals. With a commitment to enhancing the lifespan of knives, they strive to offer the perfect stone for every type of blade. We stock a wide selection of Imanishi natural stones, as well as select synthetic options.

Japanese sharpening experts have long revered dense natural stones for their ability to create delicate finishes and provide exceptional edge retention. Its soft texture, strong abrasive power, and ability to produce fine slurry make it ideal for experienced sharpeners seeking precision and smooth sharpening.

Each stone is unique in its composition and characteristics, meaning slight variations in size and finish are expected. These stones are a lifetime investment for those who enjoy sharpening their knives and tools. The Type 40 stones, sized at approximately 205x30x75mm and weighing between 2.5 to 3 pounds. While they produce a fine sub-mirror finish with good contrast, slight imperfections such as small chips or inclusions may be present due to their natural formation.

The Ohira mine is known for producing premium whetstones like Uchigumori, Suita, and Tomae stones, valued for their fast cutting speed and refined, toothy edge. These stones, ideal for fine finishes on razors or tools, should not be soaked and must be properly cared for to avoid splitting. We strive to disclose any flaws, though natural stones may still have minor imperfections. All stones are carefully selected by expert dealers in Kyoto to ensure top quality.