Naniwa Diamond Review

Hi!

I have already tested Naniwa's diamond stone for couple of months.

And these are no more brand new acquaintance.

To my knowledge, these have been on the market for a few years now.

I don't know the exact date, when it came out.

but I tested these for the first time in February

At the Frankfurt fair.

And actually after that, I ended up...

that, yes, this is to be included in the selection...

because it is, after all, quite a very special and different diamond.

The price of this product is is actually surprisingly high.

but is it value for money?

So that's what I am now here to find out.

My diamond experience was born -

with this Atoma diamond series.

There the roughness goes to 140, 400, 600 and 1200.

But here comes the first one difference with this Naniwa diamond.

In my selection you will find this series 400, 800, 1000, 3000 and 6000.

So the interesting one for me is it's in the finer grits

So a diamond stone 3000 through 6000,

that was the range, that I was definitely interested in.

The stone really is a bit different compared to Atoma.

This is indeed surprisingly thick this aluminium base, this is 15 millimetres.

So the most obvious difference is -

in the way the diamond is mounted.

From this picture, we can see very well.

In Atoma we have a plate surface, on the clean, vertical lines of...

diamonds, and here we have where you can see that diamond shape.

So the absolute advantage of the Atoma...

that it has systematically fixed the diamonds...

compared to some other competitors.

So the level of quality Atoma produces...

is even better by far and and makes the stone surprisingly efficient.

But in Naniwa Diamond we don't really have...

any diamonds attached...

but the diamonds are set in a really hard mass.

It's one millimeter thick layer on the surface of this plate.

And you can see from this picture that this looks like

a typical whetstone surface under a microscope.

This is the thing that makes me interested in this.

I'm a little alienated, or I should say...

that very much alienated of these diamond stones...

Because it's so completely numbing.

So I haven't liked the sharpening feeling at all.

The diamond stone definitely has its place.

It's really good for coarse work...

even better while flattening

But the feel, it's absolutely horrible on that Atoma.

You don't feel anything on that blade.

You can't tell by the sound, where we're going.

you can't feel where you're going.

You just have to check the blade, so you know what's going on.

This Naniwa Diamond is so close to the basic surface hardness.

or should I say the feel of a full hard ceramic stone.

I bet even the hard ceramic stone Doesn't necessarily feel perfectly good.

It loses that feel, but you do have a certain kind of paw...

to it all the time, what's going on.

I was thinking, that now would be a good time to test...

what kind of sound this makes compared to the basic Atomic Diamond.

because you can already tell the first significant difference.

So let's take 400 stones from the diamond set...

and see what kind of sound comes out.

So the sound and feel are so close...

to a basic hard surfaced whetstone

Let's change then to the Atoma 400.

This is no longer a completely new one..

which means I've had it for a while, but you can still get a feel for it.

So the soundscape is completely different.

But then there's the clear difference as well.

that 400 Atoma is ... I have to admit.

more efficient than the Naniwa Diamond 400.

So there is a clear difference in power.

So if I do not like something on Naniwa's Diamond Series.

it's this 400-stone power.

The same problem is nowhere to be found in the 800 and 1000 stone.

So in my opinion they are perfectly comparable to the others...

but this one should have been a little bit faster

So what kind of mark does this leave?

I sharpened it just for comparison the ANV's folding knife.

where is Magnacut steel..

which is surprisingly enough a demanding sharpenable.

On the other side is the Atoma 400, which made these marks.

Then here on the other side on the other side we put...

Naniwa Diamond at 400 made these marks.

So I say Naniwa Diamond, when it's a little bit slower.

it also leaves, so to speak a better mark on that one, so to speak.

So I had to do a little bit more work,

but it's not a huge difference.

But you could feel it quite clearly and it showed a little bit in the time.

But just for comparison then again.

what the soundscape looks like the Naniwa Pro 400.

And once again in reverse these.

Yes, that's it.

Atomic 400 Diamond is, I would say, a rough stone, a powerful stone.

makes a terrible noise, and you can't get any kind of feel for it.

But then Naniwa Diamond 400 and the Naniwa Pro 400

are very close to each other.

I say that's the mark, that the stone leaves and what the power is...

then they are so close to each other.

And that's probably how they tried to stamp Naniwa themselves...

when they started building these.

What is this stone the absolute best feature of this stone?

I say it is definitely a perfectly flat surface.

We certainly have that durable one-millimeter layer of this hard diamond mass.

It has been promised an incredibly long lifespan.

I'm actually a bit scared to say it.

because I think it's so long life span promised.

So I was told that this should last 20 times longer...

than the Naniwa Pro 400.

I find that hard to believe.

I can't test something like this in normal everyday life.

If my Naniwa Pro 400 lasted me 4-5 years...

before it snapped, times 20.

I would not be here on this planet anymore.

So difficult to test, what the truth is behind this.

But it definitely tells you...

that we are now talking about a really hard surface.

Well, what is it then the absolute best this diamond?

Meaning, for all straight blades.

I have taken this for daily use...

when I'm sharpening the clipper blades, for example.

So when I have a straight clipper blade.

then this is what really come in handy.

Right, I missed this one

So there is one good feature, This is wide.

So this is basically 74-75 millimetres wide.

So the length is basically 210 millimetres.

more or less, which is what I measured here.

The width makes it the usefulness of this one...

i.e. clipper blade and straight razor.

Oh my! I mean, I'm sharpening these days my razors with this.

So I used to sharpen razors.

I started with a 1K of stone, 3000, 6000 and up from there...

then I go all the way up to 20,000.

But now I am, so to speak thrown away the Shapton glass stones...

I'm currently doing this -

with Naniwa Diamond set.

So I'm using, well, I've got that 800 stone in use.

800, 3000 and 6000.

And the thing that surprised me, when I looked closely under the microscope.

was the mark that this left, it's unbelievably good.

So we're really talking about a really pleasant stone to use.

The mark it leaves, is really good...

and endurance is promised for a ridiculously long time.

In terms of endurance has its own little risk too.

So that means, when I'm sharpening chisels.

a planer blade, clipper blades and razors.

then neither of these wear and damage the surface quickly.

Let's take sharp tip of Buschcraft knife

then of course there is a risk, that I'm going to wear out that plate.

I have sharpened hard powder steel

folding knives etc

because we have lot of power in these

So the diamond is definitely at its best for really challenging -

and hard metals.

So an absolute recommendation yes from this stone for those jobs.

I say that these are are definitely qualified stones -

and definitely a good buy, if you've got a lot of those blades.

who would benefit from the properties of this stone.

You can also find smaller version of this series...

Which is indeed suitable for smaller knives...

and similar smaller blades sharpening. So really handy.

Here's a five-millimeter aluminum blade...

but the same mill layer of mass on that surface.

Very good to take along as a little sharpening stone.

Doesn't weigh that significantly.

Nothing more than let's keep testing. Hello!