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Old 04-15-2020, 02:41 PM
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Default New Finnish Military Knife Rokka Korpisoturi

Rokka Knives Korpisoturi [Wilderness Warrior]


My Korpisoturi is #26/101, the first installment 101 pieces.

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Rokka Korpisoturi

Quote:
Originally Posted by Rokka in Facebook
Korpisoturi-puukko, a brief introduction to The Better Blade

Hello everyone! Happy to be able to finally introduce the project we have been silently building for five years total, and as Rokka Knives Ltd. since september 2018. Our goal has been to modernize the Legendary Finnish universal tool - Puukko-knife - while staying true to handmade originals.

What makes a traditional Puukko-knife in our view?
-carbon steel blade with a rhombic cross section geometry - result of the forging process
-often rhombic cross section tang, again because of the method of forging
-gentle taper from the shoulders to both directions
-selectively hardened cutting edge, with a tough, springy spine
-hard cutting edge
-through/hidden tang construction
-high flat grind (about 2/3 of the blade)
-no secondary bevel
-relatively aggressive edge angle (17-22 degrees)
-the knife should be both functional and beautiful, although we know it’s in the eye of the beholder
-sturdy, yet lightweight
-fairly small overall size
-moderate blade length

As you can see, it’s a extreme combination of characteristics.

Puukko has had a growing following both in Finland, and lately also abroad. We LOVE traditional Puukkos, so the pressure has been on - how to go about tinkering with a time tested and revered design, respectfully.

Our goal has been to create a Puukko that remains true to the defining characteristics of the originals, but introduces upgrades in areas where many people have been asking for them. Furthermore, we wanted the end product to be as close as possible to 100% Made in Finland, including manufacturing and the components needed for the manufacturing process. Korpisoturi-puukko is proudly Made in Finland!

Choice of steel
We decided on Böhler 80 CrV2 early on, because it is a well understood, and overall a excellent tool steel that can be used to produce high performance blades when masterfully heat treated, and used in a proper context. Our bladesmith has used 80CrV2 for years, and it is highly regarded by many custom knife makers around the world. 80 CrV2 is a ”simple”, yet excellent carbon steel, and that fits the bill perfectly when it comes to a Puukko blade.

Blade
Rhombic geometry runs through the entire form of the blade and tang. There are no unworked surfaces. This made the process of designing and producing the jigs, and the injection molds interesting, to say the least. Grinding of the blades was also quite complicated, but, thanks to the great level of professionalism and expertise at Laurin Metalli Oy a working process was found. The blade and tang of Korpisoturi both taper towards the tip, as they would on a handmade Puukko. On a Korpisoturi-Puukko this has been done to shed weight off of the 5mm thick blade.

Heat treatment - method by Finnish metallurgist Juha Perttula;

the entire element hardened and tempered springy, about 50 HRC
cutting edge induction hardened and tempered to 63 HRC (+/- 0,5)
the ”glass breaker” at the tip of the tang induction hardened and minimally tempered to achieve maximum useable hardness

The edge angle is about 19,5 degrees to make the knife bite suitably aggressively, without taking away too much from edge retention.

The handle
Typical criticism against traditional Puukkos is the shape of the wooden, or birch bark, handle that seems slippery/dangerous at a glance. The lack of a finger guard has been a concern for many. We do not necessarily think that this is a problem, but, decided to shape the handle of Korpisoturi to reflect modern preferences. Simultaneously the shape of the ”guard” gave us an opportunity to use the feature to secure the knife into it’s sheath properly - lack of a clear locking mechanism being another point of criticism against traditional Puukkos with friction type sheaths (not to be confused with ”naksutuppi”).

Korpisoturi has a softly contoured injection molded TPE Dryflex handle, hardness 80 Shore A. We shaped the handle moderately, understanding fully the philosophy behind simple Puukko handles; more shape you add limits possible grips, and makes the knife less friendly on the hand in extended use.

The sheath
Instead of a wet formed leather sheath Korpisoturi has a Kareline natural fibre composite sheath that does not absorb moisture, is machine washable and withstands a wide temperature range (-30 to +100 degrees celsius). Kareline is probably best known as the material for the Kupilka outdoor kitchenware. The sheath is ambidextrous - with points for the attachment on both sides - and is compatible with various retention mechanisms, than can be set on different hights according to the users preference. It comes with a short Tactical Tailor Malice-clip for pals/molle compatibility. For a more traditional belt carry a longer version of the Malice-clip can be purchased.

Just like many handmade Puukkos Korpisoturis sheath is a ”naksutuppi” (rough translation; clicking sheath), which clearly indicates a positive lock with a click.

We are proud of what our team has achieved so far, and hope others find our work interesting and worthwhile. That said, we are far from being done - Korpisoturi has many surprises yet to be revealed.

———

About Rokka Knives

The project was originally a brainchild of three Finnish Puukko-enthusiasts who thought it was about time to update every Finns favorite outdoors tool. For the first three years or so it was all very much ”shoestring”, but has since developed into a actual company - albeit a tiny one, still. Officially Rokka is a one man operation, but all six owners are committed to making it grow. Read, only one is actually getting paid, and others are working for the sheer pleasure of it.

Our team is from a wide range of professions, which has allowed us to do many things independently. Except websites, which is instantly obvious.

In addition to the Korpisoturi-Puukko we already have several products in the pipeline. More about that later.

———

Rokka Knives would like to thank all the great (and great many) people who have helped us and cheered us on for years. You rock, we know who you are, and we will not forget!

We would also like to thank the great folks at;

@laurinmetalli
vesuto.fi
@plasthill
@3dformtech
@fckoneistus
@niinimakirdps

Without you none of this would have been possible.

We would also like to extend our immense gratitude towards all the experts and organizations without whom Rokka Knives would already be a smoking crater in the Finnish startup soil:

@businessmill
@businessfinland
@finnvera.fi
@etelakarjalanyrittajat
@wirmalappeenranta

Finally, we would like to thank a great group of professionals who have been heavily involved in the development process of Korpisoturi from the very beginning.
The picture lying colour

Last edited by S&WshooterFIN; 04-15-2020 at 08:29 PM.
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Old 04-15-2020, 02:45 PM
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That’s an awesome looking knife. Thinking I may need to have one.
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Old 04-15-2020, 04:45 PM
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Interesting color for a military knife.
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Old 04-15-2020, 04:56 PM
dougb1946 dougb1946 is offline
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I lose enough knives, don't see a need for one in a camo pattern. Same with gun cases. It is a good looking blade.
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Old 04-15-2020, 06:12 PM
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Interesting. Looks like it is not yet available. Has it been adopted by Finnish military? Price? Dimensions?

It looks like a full, but hidden tang, similar to the Varusteleka Jakaaripuukko. I have a couple of blades in 80crV2. It is an excellent knife steel. The tapered tang is an attractive feature not found on too many production knives.

You don’t often see a pink military knife. I have way too many knives, and not one of them is pink. I would buy it anyway, if the price was right. By way of comparison, the Jakaaripuukko is about $70 shipped, including a very nice sheath.
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Old 04-15-2020, 08:09 PM
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This knife cost about 160* in Finland
My own picture lying colour
Real colour is maybe tan



Last edited by S&WshooterFIN; 04-15-2020 at 08:34 PM.
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Old 04-15-2020, 08:17 PM
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I believe that is $175 American Dollars. It’s a beautiful knife which reminds me a lot of Mora’s—I can buy 5 of the below for that price.

Morakniv Kansbol Utility Knife Fixed 4.3" 12C27 Blade, OD Green TPE Handle, Polypropylene Sheath - KnifeCenter - 12634
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Old 04-15-2020, 08:52 PM
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MORA is sheep Swedish knife.



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Old 04-15-2020, 09:12 PM
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$175 puts it above my pay grade, although it could be quite a bit less in this country if that price includes VAT. The Kansbol is a great knife, my favorite Mora. I think the Jaakkaripuukko is a better direct comparisin, though, with a full tang hidden in the rubber handle and 80crV2 steel. $37.99 with no sheath, but with the sheath it will come to over $80 once you get it shipped here. That’s not five knives, but it is two Jaakkaripuuko plus a More Companion. Then there is the Benchmade puukko for about $120. Tough to compete.
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Old 04-15-2020, 09:19 PM
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That’s a lot of money for that knife.
I’ll stick with my el Cheepo Moras.
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Old 04-15-2020, 10:32 PM
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Quote:
Originally Posted by S&WshooterFIN View Post
This knife cost about 160* in Finland
My own picture lying colour
Real colour is maybe tan


How much in USD?
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Old 04-15-2020, 10:34 PM
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Very nice. I had a gorgeous, handmade puuko, wood and steel, that I lost in the fire two years ago. I hated that!!!! Nice to see others like them as much as I do.
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Old 04-15-2020, 10:48 PM
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Quote:
Originally Posted by smoothshooter View Post
How much in USD?
Korpisoturi [English Wilderness Warrior] is much better than Varusteleka Jääkäri Puukko. Jääkäri is also good knife.
You can turn Rokka Korpisoruri 90 degree and it not brouken


Price is about 175 USD in Finland
In Finland we pay 25% VAT

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Old 04-16-2020, 03:24 PM
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If I were in the Finnish military it’d be a neat knife to be issued.

But being as I’m not, a Morakniv will have to do and I think it will do just fine.
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Old 04-16-2020, 03:57 PM
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Quote:
Originally Posted by S&WshooterFIN View Post
Korpisoturi [English Wilderness Warrior] is much better than Varusteleka Jääkäri Puukko. Jääkäri is also good knife.
You can turn Rokka Korpisoruri 90 degree and it not brouken

In what ways is the Korpisoturi better? Similar size, similar weight (presumably, I still haven’t found specs).

Same steel, 80crV2. Is the heat treat better?
Rhombic cross section? I have heard that is a good thing, but havent heard why. Weight savings, slicing through some materials?

Perhaps we will know more when they become available for sale. Maybe those crazy Dutch kids will do a side-by-side test.
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