---
product_id: 48222732
title: "Combination Sharpening Stone, grit: 400/1000 - Japanese knife sharpener for coarse and fine sharpening - sharpening stone 400 1000 whetstone for knives usable surface 18 x 6 x 3 cm"
brand: "kai"
price: "18691 kr"
currency: ISK
in_stock: true
reviews_count: 10
category: "Kai"
url: https://www.desertcart.is/products/48222732-combination-sharpening-stone-grit-400-1000-japanese-knife-sharpener-coarse
store_origin: IS
region: Iceland
---

# Water-soak prep for optimal sharpening Dual grit 400/1000 for coarse & fine sharpening 18 x 6 x 2.8 cm premium whetstone surface Combination Sharpening Stone, grit: 400/1000 - Japanese knife sharpener for coarse and fine sharpening - sharpening stone 400 1000 whetstone for knives usable surface 18 x 6 x 3 cm

**Brand:** kai
**Price:** 18691 kr
**Availability:** ✅ In Stock

## Summary

> 🔪 Sharpen like a samurai — precision meets tradition in every stroke!

## Quick Answers

- **What is this?** Combination Sharpening Stone, grit: 400/1000 - Japanese knife sharpener for coarse and fine sharpening - sharpening stone 400 1000 whetstone for knives usable surface 18 x 6 x 3 cm by kai
- **How much does it cost?** 18691 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/48222732-combination-sharpening-stone-grit-400-1000-japanese-knife-sharpener-coarse)

## Best For

- kai enthusiasts

## Why This Product

- Trusted kai brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Non-Slip Stability:** Designed for safe, steady use on any countertop—sharpen like a pro without slips.
- • **Generous Sharpening Surface:** 18 x 6 cm stone area ensures even, consistent edge refinement every time.
- • **Water-Activated Performance:** Soak for 5-10 minutes to unlock smooth, cool sharpening that preserves blade integrity.
- • **Precision Sharpening Dual Grit:** Coarse 400 grit resets dull blades; fine 1000 grit polishes to razor sharpness.
- • **Traditional Japanese Craftsmanship:** Expertly engineered with heritage blacksmithing techniques for unmatched durability.

## Overview

The KAI Combination Sharpening Stone is a premium Japanese whetstone featuring dual grit levels (400 for coarse sharpening and 1000 for fine honing) on an 18 x 6 x 2.8 cm surface. Crafted with traditional blacksmithing expertise, it requires water soaking for optimal performance and offers a non-slip design for safe, professional-grade knife sharpening at home.

## Description

When using a whetstone, proper preparation and technique are crucial for optimally sharpening your knives. Start by soaking the whetstone completely in water for about 10 minutes to saturate it. During the sharpening process, ensure that a thin film of water remains on the surface of the stone, as this is important not only for sharpness but also for cooling the knife edge. For double-edged blades, place the whetstone lengthwise on the work surface in front of you. Position the knife with the edge facing you at a 45° angle to the stone and lift it at an angle of about 15°. Begin the sharpening process at the tip of the blade, applying light pressure on the edge so that the blade remains in contact with the stone. Push the knife away from you and pull it back without pressure, moving your fingertips towards the knife handle to evenly work the entire edge. This process should be repeated at least five times, depending on the condition of the blade. Then, turn the knife and repeat the process with the same number of passes on the other side. For single-edged blades, the process is similar, but the sharpening angle should match the original edge of the knife and be maintained consistently. Sharpen the blade until a fine burr is noticeable, and then remove this burr by laying the hollow ground side of the blade flat on the whetstone and sliding the knife across the stone. Alternatively, the burr can be removed with a nylon brush or newspaper. After completing the sharpening process, both the knife and the whetstone should be thoroughly rinsed with clear water. This careful procedure ensures that your knives are optimally sharpened and stay sharp for a long time.

Review: Five Stars - It is better than I expected. Thank you very much.
Review: Good but expensive! - I own and use this whetstone, KAI is a well known knife brand and can be trusted. It just takes some practice to learn how to use it. The 400 (荒砥石) is used for very blunt knives or knives with visible gaps in the blade. The 1000 (中仕上砥石) is used for everyday maintenance. There are youtube videos but basically the angle is quite important and the stone needs to be kept wet (if it dries, you can add more water to the tray which will soak into the stone). My only issue is that the set retails for £11.36 in Japan and £40 is a high markup even considering the import job.

## Features

- The KAI Combination Sharpening Stone with a working surface of 18 x 6 x 2.8 cm offers a dual grit of 400/1000. It is ideal for coarse sharpening and fine honing of your knives, crafted from premium materials for long-lasting quality - storage box 25.2 x 9.4 x 5 cm.
- This versatile sharpening stone is perfect for sharpening kitchen knives and other cutting tools. Its double-sided structure allows for both efficient grinding and precise polishing.
- For best results, soak the stone in water for 5-10 minutes before use to ensure complete saturation. This is essential for effective sharpening. Then place the stone on a non-slip surface and begin the sharpening process.
- Start with the coarse side (grit 400) for pre-sharpening and then switch to the finer side (grit 1000) for a smooth, sharp finish. Hold the knife at an angle of about 15 degrees to the stone.
- Known for its expertise in traditional Japanese blacksmithing, KAI combines timeless design with modern technology to deliver products of unparalleled quality and durability. The sharpening stone embodies the dedication to Japanese tradition.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000RVDN9C |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 1,757,226 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 1,290 in Manual Knife Sharpeners |
| Colour | Gray/Blue |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,177) |
| Date First Available | 19 Oct. 2009 |
| Grit Description | Medium |
| Grit Number | 1000 |
| Item Package Quantity | 1 |
| Item Weight | 735 g |
| Item model number | AP-0305 |
| Manufacturer | Couteaux Japonais |
| Material | Plastic |
| Number of Pieces | 1 |
| Part number | AP-0305 |
| Product Dimensions | 25.4 x 9.5 x 5.59 cm; 734.82 g |
| Size | 1 - Pack |
| Style | A |

## Product Details

- **Brand:** KAI
- **Colour:** Gray/Blue
- **Global Trade Identification Number:** 04901601424621
- **Grit type:** Medium
- **Item weight:** 735 g
- **Manufacturer:** Couteaux Japonais
- **Material:** Plastic
- **Number of items:** 1
- **Product dimensions:** 10L x 10W x 10H millimetres
- **UPC:** 798837807540 735533307943

## Images

![Combination Sharpening Stone, grit: 400/1000 - Japanese knife sharpener for coarse and fine sharpening - sharpening stone 400 1000 whetstone for knives usable surface 18 x 6 x 3 cm - Image 1](https://m.media-amazon.com/images/I/51NcZQLgUjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five Stars
*by E***S on 29 June 2016*

It is better than I expected. Thank you very much.

### ⭐⭐⭐ Good but expensive!
*by R***S on 27 February 2024*

I own and use this whetstone, KAI is a well known knife brand and can be trusted. It just takes some practice to learn how to use it. The 400 (荒砥石) is used for very blunt knives or knives with visible gaps in the blade. The 1000 (中仕上砥石) is used for everyday maintenance. There are youtube videos but basically the angle is quite important and the stone needs to be kept wet (if it dries, you can add more water to the tray which will soak into the stone). My only issue is that the set retails for £11.36 in Japan and £40 is a high markup even considering the import job.

### ⭐⭐⭐⭐⭐ Five Stars
*by A***R on 18 October 2016*

good stone

## Frequently Bought Together

- Kai Corporation AP0305 KAI Combi Whetstone Set (#400, #1000)
- KAI Scissors 7250 10in Shears, Pictured
- Kai 7300 12 Inch Professional Scissors

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-05*