Knife
Mini Diamond Sharpener
Mini Diamond Sharpener with Protective Case
Release Date: Wednesday, July 9, 2025
Price JPY 2,600
Suitable for touch-up sharpening of knives, kitchen blades, and pruning shears.
Grit rating: equivalent to #325 diamond particles.
Made by Kobayashi Tool Works
This product is manufactured in-house by Kobayashi Tool Works—the company behind Muthos Homura.
⚠️ Usage Note
Please read and follow the safety instructions before use.
Other expenses : Shipping costs only include the freight charges from Japan. Depending on the country of purchase, additional value-added tax (VAT) and customs fees may apply. Each purchaser will be responsible for these costs.
SpecMini Diamond Sharpener with Protective Case
| Size | 0.47" (W) × 5.31" (L) × 0.39" (H) 12mm (W) × 135mm (L) × 10mm (H) |
|---|---|
| Diamond-Coated Sharpening Section | Dual-Surface Design: Flat & Curved (R-Profile) One side features a flat surface, while the other incorporates a rounded edge—allowing for versatile sharpening angles and techniques. Abrasive Coverage: 2.76" (70mm) The diamond-coated area spans 2.76" (70mm), offering sufficient surface for touch-up sharpening across various blade types. |
| Weight | Weight Breakdown - Body : 1.02onz (29g) - Case : 0.21onz (6g) Total : 1.23onz (35g) |
| Made in | Tsubame-Sanjo (JPN) |
For Knife Maintenance
Sharpening Guidance for Knife Maintenance
With continued use, knives may develop small burrs or chips along the edge that diminish cutting performance. To restore sharpness, light polishing with a diamond sharpener—such as this product—is recommended.
Note: Excessive sharpening can worsen performance. For best results, apply the sharpener lightly to maintain the blade’s original shape.
Recommended Finishing Touch
We suggest finishing with stropping, using a leather strop and compound to refine the edge.
When Professional Help Is Needed
If sharpening proves difficult—particularly in cases of significant chipping—please consider using a paid re-sharpening service from a professional knife specialist.
