[Men-naoshi] Dedicated Whetstone – A sharpening stone exclusively for flattening whetstones.
This product is a dedicated item for “men-naoshi,” which restores the flat surface of a sharpening stone. Sharpening stones become concave with use, causing the blade to not make uniform contact, leading to uneven sharpening and a decrease in sharpness. Performing men-naoshi maintains stable sharpening and allows you to use your sharpening stone for a longer period.
■ Features
・Made in Japan: Manufactured domestically with controlled quality.
・Uniform PA Abrasive Grains: Suppresses excessive grinding, enabling stable flattening.
・Dedicated to Flattening: A maintenance tool specialized in correcting the plane of sharpening stones.
■ Signs It’s Time for Men-naoshi
・Unstable contact even after sharpening
・Feeling that the center of the sharpening stone is sunken
・Unevenness in the finish
■ How to Use (Easy 3 Steps)
1. Submerge both the sharpening stone and the flattening stone in water, allowing them to fully absorb the water.
2. Align the concave surface with the flattening stone and rub them together in a circular motion. Add water as needed.
3. Check for flatness using a ruler or similar tool.
■ Care and Storage
・After use, wash away the slurry with running water and allow to air dry in a well-ventilated, shaded area.
・Avoid storing in humid places or in a sealed container for extended periods.
■ Product Specifications
・Purpose: Flattening (plane correction) of sharpening stones
・Size: Approximately 15.5cm × 5.5cm × 2.5cm
・Abrasive Grain: PA abrasive grain (#100 equivalent)
・Country of Origin: Japan
■ Precautions
・This product is not for sharpening knives (dedicated to flattening sharpening stones).
・Using it in a dry state can cause clogging and unevenness. Be sure to use it with water.
・Discontinue use if cracks or chips occur.
・[Men-naoshi] Dedicated Whetstone: A specialized item for correcting the plane of sharpening stones. It restores the flat surface of sharpening stones that have become concave through use, preventing uneven sharpening.
・Made in Japan: Manufactured domestically with controlled quality. Stable quality allows for long-term, reliable use.
・Uses Uniform PA Abrasive Grains: Employs uniform PA abrasive grains, enabling stable flattening while suppressing excessive grinding. The design is gentle on the sharpening stone.
・Easy to Use: Simply move the flattening stone over the sharpening stone and rub them together. Flatness can be checked with a ruler, etc.
・To Use Your Sharpening Stone for Longer: Performing regular men-naoshi ensures uniform blade contact and maintains stable sharpening.
【Voltage Compatibility】
When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.
【Plug Type】
Our products use Japanese plug types (A or B type).
Please use a conversion adapter if necessary.
【Important Note on Transformers and Adapters】
A transformer adjusts voltage to match your device's requirements.
A conversion adapter only changes the plug shape and does not adjust voltage.
Using only a conversion adapter without a transformer may result in damage to the product.
【Liability】
We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.