Fallkniven DC3/DC4 Whetstones

Nice pocket stone. Easy and quick to get a razor edge. No oil or water needed so clean to use.

DC4 version I got is good and functional, it came flat on both sides, not brilliantly put together (the gold diamond plate was glued to the ceramic stone at an angle instead of completely square (minor overhang)).
DC3 version came with a few bumps on both diamond and ceramic surfaces which dug small chips into the blades edge. 10/10 for Heinnie services.

I bought several DC4 and DC3 and they worked with me in every environment on the field.
This last DC4 seems very different from the others.
First of all the stone is not smooth ceramic/waved ceramic (DC3) as the previous ones. It's a black stone more spongier, for sure it's not polishing as before.
Sounds strange to me, why Fallkniven they are doing like that. I prefer for sure the smooth (sometimes no... but worth to condition flat) sapphire stone againt the diamonds.
Excellent service from HH as usual, all over the world.

Since both sides were without any bumps like the "bad batch" from a while back, I was really chuffed... until I actually used it. Why? Because after using it once I ended up with two seperate stones.
It's going back ASAP and not for a replacement. In my opinion it's obviously not a batch issue.

Although the surface was not good to start with, using the stone on a cheaper knife for a while the surface improved greatly. It will never totally replace my oil stone it's a great bit of kit to carry with you when light weight camping.

I agree with the other reviewers that the ceramic edge has small raised dots that make sharpening surface uneven. Sharpens well though would prefer a smooth surface

These are not the same as they ones from a few years back. The diamond coating is never going to last and the fit and finish is poor compared to what they used to be. The ceramic side is very poorly finished. This is my last.

These newer DC4's are utter crap compared to the older ones, my ceramic side is very uneven with little bumps on it, but also the knife doesn't even touch the middle of the stone because the edges are raised up, what complete crap, Fallknifen shouldn't make something so bad compared to their knifes.

A wonderfull little stone, you get a very sharp edge.

Got my first DC4 a few years ago and had to return it to HH for replacement. The diamond surface had started to bubble. HH replced it without question. Replacement has been excellen. HH - best service on the net.

I find the negative comments about the stone at odds with my experience. Sharpening everything from my gerber, sak to my Japanese cleaver is a doddle. Big plus is that Heinnie is a good few pound cheaper than you know whos website!! excellent.

Perfectly smooth and level on both sides... I'm guessing heinnie got in a new batch?

Followed DBs advice and dressed the ceramic side. I used aluminium oxide to get an improvement, then the diamond side fell off. However, after relentlessly dressing the stone it isn't too bad. It's put a very good edge on an older knife. I think fallkniven are trying to cut costs by turning these out unfinished.

If you have any doubts when buying one of these then please just do as i did, email the kind guys at Heinnie and ask them to quality check before despatch.. got mine yesterday and both ceramic and diamond sides were flat and ready to go! used an old blade first to break it in. 1 star dropped due a tiny, tiny gap in bonding between layers but can't see it being a problem.

Great stone, excellent service as always.

First of all I have the DC3 which is superb, this version is somewhat rougher and will damage your blade if you don't smooth out ceramic side first, at least my one will so be careful before you let rip on your prized blade, diamond surface is awesome though.

Had an original dc4, nice bit of kit, currently on my second later generation model. Appalled at the quality, i'd already sent one back 'cos' i'd assumed it was from a bad batch.
The replacement is even worse. The ceramic matrix has varying degrees of density ranging from soft to very hard.
It is a knife wrecker, nothing else.
I'll not be using it on my f13g.
Come on Fallkniven, sort it out.

I love mine! Got it last year and has been around the world with me. Still going strong!

Initial impressions; Nice size, sheath and weight for " the field ". Big enough to sharpen sub 8 inch knife without having to do it in sections.

The ceramic side sucks horribly, it is concave, so only the sides make contact with the blade. There are also lumps along the middle that actually put small chips in the nice edge you just made the the diamond side.

Much heavier than I expected. Good size for the field.

Diamond is very course when first used

Synthetic sapphire side was not 100% flat as there were very small bumps in random places. Scratches blade a lot and does not give a very fine finish cosmetically, but it does the job to sharpen.

Interesting to see if both layers stay together as I've heard instances of the adhesive coming loose. Not a deal breaker as both sides can still be used separately or epoxied together if it does happen

The original DC4 has fine grooves on its ceramic side, which is no longer the case in the new design. The latest version of DC4 adopted a smooth surface on its ceramic side. Nevertheless, the smooth side on mine is not as flat as something I would normally expect from Fallkniven. The diamond side remains the same, and is very effective to remove metal quickly. Hence, 3 stars for overall performance.

the diamond plate is fantastic, takes off metal fast, cleanly and leave a good edge.
that was the good part, the bad part is the diamond plate is warped and bent in the middle, not very noticeable but its there, the ceramic and diamond plate seperated and needed to be super glued back together.

ONLY SHARP KNIVES ARE INTERESTING AND THE DC4 CERTAINLY GETS THEIR ATTENTION.
TOP TIP, USE A SMALL PIECE OF NON SLIP UNDERLAY/MAT (THE TYPE YOU USE ON THE CAR DASH)TO HOLD IT IN PLACE WHEN OUT IN THE FIELD.

Easy to use, easy to clean, sharpens great - have even sharpened an axe on this little thing!

received my dc4 this morning i would just like to add, the service at Heine Haynes, is outstanding, i have never dealt with a company like it, the dc4, is a must, it keeps all your knives in tip top condition, highly recommended.

Absolutely brilliant little sharpener. Ideal for your pocket, only wish they done a larger one, and I'd got one sooner.