---
product_id: 289715746
title: "Straightening Stone IO-1142 Grit 220"
brand: "ナニワ研磨工業"
price: "¥10684"
currency: JPY
in_stock: true
reviews_count: 5
category: "ナニワ研磨工業"
url: https://www.desertcart.jp/products/289715746-straightening-stone-io-1142-grit-220
store_origin: JP
region: Japan
---

# premium Japanese whetstone material fast trough correction speed 220 grit fine particulate density Straightening Stone IO-1142 Grit 220

**Brand:** ナニワ研磨工業
**Price:** ¥10684
**Availability:** ✅ In Stock

## Summary

> 🪄 Elevate your edge game with precision Japanese finesse!

## Quick Answers

- **What is this?** Straightening Stone IO-1142 Grit 220 by ナニワ研磨工業
- **How much does it cost?** ¥10684 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/289715746-straightening-stone-io-1142-grit-220)

## Best For

- ナニワ研磨工業 enthusiasts

## Why This Product

- Trusted ナニワ研磨工業 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Pros:** Highly rated with 4.5 stars from 700+ sharpening enthusiasts
- • **Optimized Grit Density:** 220 grit particulate for a fine yet efficient finish
- • **Compact & Portable Design:** Small footprint (5.6 x 17.6 x 3.3 cm) fits easily in any toolkit
- • **Precision Surface Renewal:** Quickly corrects troughs for a perfectly flat sharpening base
- • **Premium Japanese Craftsmanship:** Authentic Naniwa stone ensures consistent, high-quality performance

## Overview

The Naniwa IO-1142 Straightening Stone is a finely crafted Japanese whetstone with a 220 grit particulate density designed to quickly and effectively correct troughs on sharpening stones. Compact and durable, it offers a fast, reliable surface renewal for maintaining optimal sharpening performance, backed by strong user satisfaction and professional-grade quality.

## Description

- The straightening whetstone quickly corrects trough on the whetstone - You can use emery for a more beautiful and faster finish - Particulate density 220

Review: Estoy muy satisfecho con la compra, rectifica muy bien las piedraa. Sólo que si hay que darle mantenimiento a la planicidad. Pero excelente producto
Review: 既に持っているダイヤモンド砥石とPAの面直し砥石に比べ目詰まりが気になります。金剛砂使った方が良いんですかね？ あと小さいのでまだ持ってない人には砥石大のダイヤモンド砥石をお勧めしたいですね。

## Features

- Naniwa #220 IO 1142 Japanese Whetstone

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BB2SNLO |
| Best Sellers Rank | #80,763 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #114 in Sharpening Stones |
| Brand Name | ナニワ研磨工業 |
| Color | Gray |
| Customer Reviews | 4.5 4.5 out of 5 stars (703) |
| EU Spare Part Availability Duration | 1 Years |
| Grit Type | Fine |
| Item Dimensions L x W x H | 5.6L x 17.6W x 3.3H centimeters |
| Item Weight | 0.9 Pounds |
| Manufacturer | Naniwa |
| Material Type | Stone |
| UPC | 793779403317 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** ナニワ研磨工業
- **Colour:** Gray
- **Item weight:** 0.9 Pounds
- **Material:** Stone
- **Product dimensions:** 5.6L x 17.6W x 3.3H centimeters

## Images

![Straightening Stone IO-1142 Grit 220 - Image 1](https://m.media-amazon.com/images/I/51HH1R4++ZL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: My Japanese is a bit rusty; What does the instruction in the back say to sprinkle something?**
A: I rub the flattening stone against the sharpening stone using running water.

**Q: Can you use the flat side to sharpen/flattening single bevel knives? would be useful to have this as a dual function stone**
A: I wouldn’t use this stone to sharpen.

The flat side can be used for major repairs and possibly for thinning but will negatively impact the life of the flattening stone more so than if you just used it for flattening.

**Q: How does this flattening stone compare to the Norton flattening stone?**
A: Being that I haven't used the Norton flattening stone I can't give an honest opinion. The Naniwa stone has worked fine for me for leveling my stones.

**Q: will this fix a king 1000 and king 6000 watering stones**
A: Unfortunately my stone arrived broke.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***. on 5 May 2022*

Estoy muy satisfecho con la compra, rectifica muy bien las piedraa. Sólo que si hay que darle mantenimiento a la planicidad. Pero excelente producto

### ⭐⭐⭐ Review
*by 薄***豚 on 6 August 2025*

既に持っているダイヤモンド砥石とPAの面直し砥石に比べ目詰まりが気になります。金剛砂使った方が良いんですかね？ あと小さいのでまだ持ってない人には砥石大のダイヤモンド砥石をお勧めしたいですね。

### ⭐⭐⭐⭐⭐ Review
*by A***R on 24 November 2023*

I was a bit alarmed with people saying there's was not flat and true. I trust the brand so ordered anyway, mine is spot on true and flat. Used it on 230 through to 12000 grit stones and it preformed perfectly. Quick word of warning don't use it to bevel the edges of the stone, I now have a neat one millimeter groove down the length of mine. It hasn't spoilt it's preformance, in fact I think it probably helps clear the slurry. After doing eight stones, some of which were quite dished it's still perfectly flat and apart from the afore mentioned groove shows no signs of wear. If you do get a stone that's off flat just take it outside with a bucket of water and rub it on a concrete paving slab, we have some in our garden.. Soon sorts it out, can do your sharpening stones the same way but you risk embedding concrete particles. I've been sharpening for years, over fifty and feel confident to highly recommend this stone.

## Frequently Bought Together

- Naniwa Straightening Stone IO-1142 Grit 220
- KING KW65 1000/6000 Grit Combination Whetstone with Plastic Base
- SHARPAL 196N ANGLE PYRAMID Whetstone Knife Blade Sharpener Sharpening Stone Angle Guide 2-Pack, 4 Universal Angles-14°, 17°, 20°, 25°

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-06-19*