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Fallkniven DC4 Diamond/Ceramic Whetstone


Fallkniven DC4 Diamond/Ceramic Whetstone


Brand: Fallkniven
  EAN 5060246910483
Weight: 80 g         98 reviews
The Fallkniven DC4 Diamond Ceramic Whetstone is a popular combination whetstone made for accurate knife sharpening in the field. Small and lightweight, the DC4 is ideal for keeping on you when travelling by foot. For a more compact whetstone, take a look at the Fallkniven DC3 or, for a larger whetstone, the Fallkniven DC521.

The DC4 features two different sharpening surfaces; one is a fine diamond whetstone of 25 micron, while the other is a fine ceramic whetstone, made of synthetic sapphires. If your knife is dull, it is recommended that you begin by using the diamond side, which will restore the wedge shape of the blade's edge. Following this, you can de-burr the edge lightly using the ceramic side, in order to get a razor-sharp edge.

The DC4 is a very low-maintenance tool in the sense that it can be used dry, without the need for any lubrication from oil or water. Every now and then, it is recommended that you simply clean the stone in warm, soapy water.

A major benefit of the DC4 is that, while the stone will become worn over time, the sharpening surfaces will remain flat, helping to aid efficient sharpening. The supremely strong surfaces can be used to sharpen any type of steel, including hard powder steels. At first, the sharpening surfaces may feel overly coarse, but this initial roughness will diminish after use.

After sharpening your knife, Woodlore recommend the use of Ice Bear Camellia Oil to protect the blade from rust and corrosion.

  • Dimensions: 100 x 32 mm
  • Weight: 65 g
  • Leather sheath included


  Delivery in 1-2 days within the United Kingdom
  UK Orders placed before 2PM GMT will be dispatched the same working day
  Overseas delivery times will vary depending on the destination

Please note that our offices are closed at weekends, so any orders placed after 2PM GMT on a Friday will not be dispatched until the following Monday.

Orders with a total value over £300.00 will be dispatched free via a next day delivery service within the UK at no extra cost.

Please note that in some instances, orders for heavy items may take an extra day to arrive.

  Overseas deliveries
For overseas deliveries, please refer to the following estimated delivery times:

  • Europe: 3 - 5 working days
  • Rest of the world: 5 - 7 working days


A full refund or exchange will be given provided that the items have not been worn or used, and are returned to us within 30 days of purchase, together with all relative labels and packaging. You are responsible for the cost of returning items.

Please ensure that you include a copy of your invoice, along with an explanation of why you have returned your goods. If you wish to return your goods for any reason, please do so to the following address:

Woodlore Limited
PO Box 3
East Sussex
TN19 7ZE
United Kingdom

Product Video

Product Reviews

Fallkniven DC4 Diamond/Ceramic Whetstone is rated 5/5 based on 98 customer reviews.

All of our product reviews are from customers with verified purchases.

Overall Rating:


  1 of 98

  Very compact & lightweight. Sharpened the knife very quickly in just 8 strokes each side.  

  Bryan Plunkett
18th January, 2024

Rated: 5/5

  2 of 98

  Wanted this for ages. It’s a good size and very nice, especially in the leather pouch. I have put this in my RM leather pouch with a fire starter. I wanted a decent sized sharpener for in the field.  

  Caroline Light
19th February, 2023

Rated: 5/5

  3 of 98

  I purchased the DC3 initially and received it very quickly but after seeing it in person I decided I would be better with the larger DC4. I returned the DC3 and the team at Woodlore were rapid in despatching th DC4 which arrived the next day, much to my surprise. The communication was excellent and I must say I felt Woodlore went above and beyond to see that I was a happy customer. That I am and I wouldn't hesitate to recommend buying from them! As for the DC4, I have managed to get a great edge on my Mora woodcarving knife and am soon to try and get my Companion in the same shape. I found it a little rough to start with, as Fallkniven state on the packaging, but it definitely smooths out after use. I'm so glad to finally be getting my knives properly sharp. Great stuff!  

  Ross Graham
14th November, 2022

Rated: 5/5

  4 of 98

  Fantastic item. Easy to carry and use. Gets a good edge on my knife. Excellent to be able to strop on the case  

  Mark Stevens
6th September, 2022

Rated: 5/5

  5 of 98

  Great product, lightweight.  

  Charles F Mcmahon
4th January, 2022

Rated: 5/5

  6 of 98

  Fab Dab, all good. Very impressive knife sharpener, small, compact and only took a few strokes to get my knife super sharp. It's pocket sized, lightweight, and the holder can be used as a leather strop, so very clever. Good price at Ray Mears - delivered quick, good service, happy camper. Thanks a bunch!!  

  Patricia Bullen
29th August, 2021

Rated: 5/5

  7 of 98

  Better size than my Fallkniven DC3 Diamond/Ceramic Whetstone, and the softer back on one side of the case works well as a strop, it's still a perfect pocket size.  

  Mark Braithwaite
4th July, 2021

Rated: 5/5

  8 of 98

  Fantastic stone for field sharpening your bushcraft knife. Perhaps a little course on the blade so I wouldn’t use it on an expensive knife but it does the job and gets my Mora Companion back to razor sharp in no time.  

  James Fisher
10th June, 2021

Rated: 5/5

  9 of 98

  Looks like it does the business. Haven't used it yet though so I cannot comment further.  

  Dan Street
15th April, 2021

Rated: 5/5

  10 of 98

  The larger sized waterstone is handy for taking with you but leaving at base camp as it is a bit bulky to carry about obviously. This item is a compromise really as the results are not as perfect as water stones but the surface stays level and it doesn’t weigh a tonne. Easier for larger blades than its smaller relative (DC3). The sleeve could somehow double up as a gripper mat rather than being landfill as it slides about if used somewhere where you can’t secure it. I’ve sharpened my blades very successfully on it. Cant say how long it will last yet. I’ve had the smaller version for years.  

  Paul Cobham
14th April, 2021

Rated: 4/5

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