---
product_id: 49568650
title: "D3EFC 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3"
brand: "dmt"
price: "€ 81.89"
currency: EUR
in_stock: true
reviews_count: 13
category: "Dmt"
url: https://www.desertcart.nl/products/49568650-d3efc-3-inch-dia-sharp-sharpener-credit-card-sized-extra
store_origin: NL
region: Netherlands
---

# micronized monocrystalline diamond surface for fast sharpening 3 diamond grit levels credit card sized, ultra portable D3EFC 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3

**Brand:** dmt
**Price:** € 81.89
**Availability:** ✅ In Stock

## Summary

> 💎 Sharpen smarter, not harder—carry precision wherever you go!

## Quick Answers

- **What is this?** D3EFC 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3 by dmt
- **How much does it cost?** € 81.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/49568650-d3efc-3-inch-dia-sharp-sharpener-credit-card-sized-extra)

## Best For

- dmt enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Edge Care:** Perfect for quick touch-ups on chisels, knives, and router bits—stay sharp on the go
- • **Effortless Sharpening:** Micronized diamond surface sharpens faster than conventional stones—no oil needed
- • **Triple-Grit Precision:** Extra-fine, fine, and coarse diamonds for every edge need
- • **Pocket-Ready Portability:** Slim, credit card-sized design fits effortlessly in your toolkit or pocket
- • **Durable & Low Maintenance:** Solid construction built to last with easy cleaning for consistent performance

## Overview

The DMT D3EFC Dia-Sharp Sharpener is a compact, credit card-sized set of three diamond sharpening stones—extra-fine, fine, and coarse—designed for fast, oil-free sharpening with a durable micronized monocrystalline diamond surface. Ideal for professionals and hobbyists alike, it offers versatile edge maintenance for tools and blades, combining portability with long-lasting performance.

## Description

Shop DMT D3EFC 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3. Free delivery on eligible orders of £20 or more.

Review: Handy and Effective - Great sharpener, needs used right and is limited by the same things as any other continuous surface sharpener (see below). On the other hand, being so thin, it's ideal for putting an edge back on slightly worn router bits. The smooth surface is great for sharpening points and small blades which usually get stuck or damaged on the holes of perforated type sharpeners. The edge it leaves is pretty good, smooth and ready for a final hone if you want a razor sharp finish. I carry this in my pocket while chiselling to touch up the edge when it starts to blunt in hardwood - takes a couple of strokes! As with all diamond sharpeners, clean it off regularly and never press too hard - the diamonds are tiny but sharp - they do the work for you, pressing harder might temporarily speed the sharpening up a bit, but it wears the diamond coating far faster, and can strip them out of the metal backing they're bedded into. At first the diamond coating takes a little bit of use to "wear in" to the correct grit and "smoothness" you'd expect from an Extra Fine card. This is true of every diamond sharpener I've ever seen. I find that simply rubbing the flat of an old knife over the surface for a short while does this quickly and effectively. You can feel the difference with your finger after just a dozen strokes or so. Having no perforations or dents in this design makes it far more prone to clogging. With a continuous surface like this, when you notice it clogging, take it to the sink and give it a scrub with pretty much any abrasive "cream cleaner" and it comes up like new. A handy tip to get it clean if it's resisting is to use a piece of cork (wine bottle one will do) to rub the cleaner into the surface thoroughly - stops you scouring off your fingerprints!
Review: Good for a quick honing - I find these DMT sharpening cards ideal for a quick honing during a turning project. A couple of quick wipes over a wood turning tool bevel and the tool is ready to continue giving a clean cut.

## Features

- Three different diamond stones: Extra fine for polishing and smoothing a cutting edge, fine for grinding a razor-sharp edge
- and coarse for grinding a rounded blade
- Faster than conventional stones thanks to the micronised monocrystalline diamond surface
- No oil required, dry or with water, solid construction for years of performance and re service

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00006IIO3 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 45,722 in Garden ( See Top 100 in Garden ) 31 in Axe & Knife Sharpeners |
| Colour | Multicolour |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,574) |
| Date First Available | 11 Jan. 2007 |
| Grit Description | Coarse,Extra-fine,Fine |
| Grit Number | 9 |
| Included Components | 1 x 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3 |
| Item Package Quantity | 1 |
| Item Weight | 9.06 g |
| Item model number | D3EFC |
| Manufacturer | Acme United Corporation |
| Material | Diamond |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part Number | D3EFC |
| Power Source | hand_powered |
| Product Dimensions | 24.13 x 12.7 x 8.26 cm; 9.07 g |
| Style | Extra-Fine, Fine and Coarse |

## Product Details

- **Brand:** DMT
- **Colour:** Multicolour
- **Global Trade Identification Number:** 00017042007546
- **Grit type:** Coarse,Extra-fine,Fine
- **Item weight:** 0.32 Ounces
- **Manufacturer:** Acme United Corporation
- **Material:** Diamond
- **Number of items:** 3
- **Product dimensions:** 8.3L x 5.1W x 0.1H centimetres
- **UPC:** 735090243289 017042007546 798167684781

## Images

![D3EFC 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3 - Image 1](https://m.media-amazon.com/images/I/81QJfBru5wL.jpg)

## Questions & Answers

**Q: How brittle are these? I want to put one in my edc pouch that rides around in my cargo pocket. Will they snap easily if bumped or flexed?**
A: I don't think there is any danger of snapping the Dia-Sharp card by accident (or on purpose, for that matter).  The substrate appears to be steel, about 1.5x the thickness of a credit card, with the finishing surface diamond-impregnated.

**Q: Has anybody tried cutting these in half....to potentially double your usage time?.otherwise, i find the middle doesnt get used, just the edges. ThankS**
A: Never have tried to cut them in half. Haven't experienced your problem with wear either. love these little stones. They do wear out though.

**Q: Is there any abrasive on the card edges?**
A: Just had a look at mine--nope, no abrasive on the edge--the cards are really thin, so I don't there really could be, anyway.

**Q: Can the cards be modified in any way?  Like cutting down to size or drilling holes through them to attach to a lanyard or camping bag?**
A: They are just metal cards with an adhesive matrix that diamond chips are embedded into. You can cut or drill them as you want, but be careful so as to not knock the diamond chips loose from the card.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Handy and Effective
*by N***. on 30 November 2012*

Great sharpener, needs used right and is limited by the same things as any other continuous surface sharpener (see below). On the other hand, being so thin, it's ideal for putting an edge back on slightly worn router bits. The smooth surface is great for sharpening points and small blades which usually get stuck or damaged on the holes of perforated type sharpeners. The edge it leaves is pretty good, smooth and ready for a final hone if you want a razor sharp finish. I carry this in my pocket while chiselling to touch up the edge when it starts to blunt in hardwood - takes a couple of strokes! As with all diamond sharpeners, clean it off regularly and never press too hard - the diamonds are tiny but sharp - they do the work for you, pressing harder might temporarily speed the sharpening up a bit, but it wears the diamond coating far faster, and can strip them out of the metal backing they're bedded into. At first the diamond coating takes a little bit of use to "wear in" to the correct grit and "smoothness" you'd expect from an Extra Fine card. This is true of every diamond sharpener I've ever seen. I find that simply rubbing the flat of an old knife over the surface for a short while does this quickly and effectively. You can feel the difference with your finger after just a dozen strokes or so. Having no perforations or dents in this design makes it far more prone to clogging. With a continuous surface like this, when you notice it clogging, take it to the sink and give it a scrub with pretty much any abrasive "cream cleaner" and it comes up like new. A handy tip to get it clean if it's resisting is to use a piece of cork (wine bottle one will do) to rub the cleaner into the surface thoroughly - stops you scouring off your fingerprints!

### ⭐⭐⭐⭐⭐ Good for a quick honing
*by S***. on 29 May 2023*

I find these DMT sharpening cards ideal for a quick honing during a turning project. A couple of quick wipes over a wood turning tool bevel and the tool is ready to continue giving a clean cut.

### ⭐⭐⭐⭐ Great sharpers and really handy.
*by C***C on 5 April 2021*

These are really handy. I use to sharpen my wood turning chisels. I don’t always need to use my grinder so having these in my back pocket is a bonus. They are not cheap but hopefully they will last a long time. I have coarse, fine and extra fine for just honing my chisels in between projects.

## Frequently Bought Together

- Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack
- Trend Diamond Abrasive Lapping Fluid, 3.4 fl oz, Blue, Professional Grade Sharpening Fluid for Optimum Performance, DWS/LF/100
- DMT (Diamond Machining Technology) 2.5-in. DiaSharp Diamond Mini-Hone Sharpening Kit of Coarse, Fine, and Extra Fine Grit Sharpeners (D2K)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-09*