Tag Archives: Pingo

STEEL K390 BÖHLER’S MICROCLEAN – UNCANNY BLADE MATERIAL.

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I have seen a video where someone is stabbing concrete with its Spyderco Police 4 to show how K390 is strong ! The blade of that famous knife is thin and this thinness is here for a purpose: Sal Glesser has decided to use the Police 4 plateforme according to his own desire but toughness and impact resistance may have weighed in on the decision. For once the Police is not especially aimed at the LEO but those ELU who use their thin knives hard !

“We make quite a few designs for the Law Enforcement market at this time, so the design for Police use is necessarily the case anymore, like it was in 1984. I designed the Police 4 to include what I would like in a knife, more than what a LEO might like. It’s still a kissing cousin, and large for most people. I widened the blade, enlarged the hole and selected a steel that I like to use. The design’s success in the marketplace is unknown at this time. But I get to have one. ” Sal Glesser.

K390 is not stainless. It’s a cold work tool steel which uses Bohler proprietary Microclean technology.  K390 has close to the same edge holding as A11 but is much tougher. Bohler’s third generation particle metallurgy contributes to the toughness of the steel.This steel will be hard to grind, finish and sharpen. Once it is sharp it will stay sharp for a long long long time. It’s CPM M4 on steroids which means K390 has more strength, durability, stability and wear resistance than M4 ! And I do love CPM M4.

Here is a video which confronts CPM M4 and K390:
https://youtu.be/TI53ziibeiQ

From Bohler’s commercial:

“K390 is quite simply the powder metallurgical cold work tool steel with the best properties for cold work applications available from BÖHLER at the moment. K390 MICROCLEAN was developed to meet the demanding wear resistance and compressive strength requirements of cutting, blanking and punching applications, for cold forming applications and for parts which are subjected to abrasive wear in plastics processing. Tool life can be increased by several hundred percent due to the outstanding wear resistance, high compressive strength and good toughness of BÖHLER K390 MICROCLEAN. These material properties enable our customers to make their production processes more efficient and consequently to reduce the price per part produced. Too hard to be machinable? Quite the opposite. The task of the tool steel manufacturer is to produce a steel which is, on the one hand, easy and economic to machine (with a hardness of around 280HB) and simple and unproblematic to heat treat, but which, on the other hand, has a very high hardness (up to 64HRc) and optimum performance in use. The secret lies in the powder metallurgy process. A very fine, homogeneous microstructure guarantees optimal machinability.

K390 owes its superior properties above all to the powder-metallurgical production process. The main advantages of BÖHLER MICROCLEAN steels over conventional steels are: • uniform carbide distribution • small carbide size • uniform chemical composition over the entire cross-section and length • virtually isotropic behaviour due to improved homogeneity and the absence of segregations.”

From Phil Wilson on the Spyderco Forums.:
“I have been using K390 from the start ever since it was introduced by Bohler and I got some small samples to try. A bit of history is that it is the European version of CPM 10V but not the exact chemistry (about 1% less V plus small addition of a few others). That is because the CPM 10V chemistry was protected by patent at the time. If you check the K390 data sheet it claims that the bit less V gives K 390 a little boost in impact toughness. It also can be heat treated at a lower temp. than 10v. So it is pretty much the same as the A11 grade but different in a few small details. It is hard to tell the difference between CPM 10v and BU K390 in the real world in my experience. I like both grades and they are the base line (along with Vanadius 10 and K294) from which I measure wear resistance. The 5 chrome is there to make them all air hardening among other things and does not contribute much to corrosion resistance. It is going to make a killer knife in the new offering and be another classic. Phil”

On my Urban, K390 has proven to be very tough. It is my main travelling folder. And it is a real wolf under sheep’skin. One of the little home test I got is by removing the metal around a bottle of wine’s cork. Most of the time, the knife edge is bent and shows some shining due to miss alignement but not with K390. The steel feels like plastic. On my three knives, the Pingo got the most stout blade and less pointy. This little knife is simply used very hard with zero damage to the edge: digging in wood, cut into staples, scrapping various paints and plastic. So far, even if the steel is not stainless, a mild patina has protected it from real rust.

So what do we got ? A tough blade which keeps its sharpness for a very long time. A forgiving edge which can be used by clumsy hands with no after thoughts.
The side effects are: the need of diamonds and ceramics to keep it razor.
Once convexed to me taste, I use white ceramic and some stropping just to get it mirror.

We definitively needs more knives in K390 !

 

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Pingo Blue C163PBL K390 Exclusive Edge Matters Edition

My first (black) Pingo was almost 6 years ago. Since, Pascal has reviewed his (orange) Pingo… in his entertaining review Pingo Star !
I got the opportunity to get a very rare beast: a blue Pingo with K390 steel blade and studs to mask the tiny trademark hole and protect it from lint.

First I have noticed is the very firm and strong spring in this one, much stronger than my previous version. It is not the easiest opener with stud which is good as it keeps up its legal character: this is a two hands opening knife which can be open with a painful thumb. 😀

Now about the steel K390 is known to me as a friendly steel. I call it an hyper steel !

CHEMICAL COMPOSITION
C Si Mn Cr Mo V W Co
2.47 0.55 0.40 4.20 3.80 9.00 1.00 2.00

The numbers are talking for themselves !!
This is not a stainless steel with carbides forms from Vanadium, Tungsten and Chrome (which is not used for stainless purpose here)…
It will get a patina very quick on daily use (especially eating and cutting meat) and this patina will protect the steel even better. It will show some character in its legality.

What a beautiful tool ! It will be a beater as he name will be Bluebeat !

“Gazing into the heavens on a night as clear as ice
We held our breath
As a new jewel glistens in the Belt of Orion
Out to the west
And parked up on the ridge between all the different lands
I feel I’ve always been here
Do we go back to the city, back to the lights
To the unforgiven world or on into the night
Where there’s always something new to fall in love with
Searching after something new to fall in love with
There’s always got to be something new to fall in love with…”

Bluebeat New Model Army.

So again Spyderco has provided a non locking sub 3 inches spyder with one of the best super “engine” available hence the fun of using it hard!

It can disappear in the watch pocket. There is no reason to leave it behind !

Of course I needed to convex the edge a great deal as I know how stable this alloy is on thin edge. So no fears in making a real blue razor from it.

Pingo Star…

IMG_6523Another inspiring knife but what more to bring to the table about the Pingo that has not yet been written either in Spyderco’s catalog or in captain Nemo’s great Pingo review ?

Here we go…

 

Parsley stem cut very neatly tree times thanks to the N690Co stainless steel full-flat ground blade. Next time i’ll have to test in supplement of parsley, Sage, Rosemary and Thyme! More seriously recent outdoor chores have been cut a branch of mexican orange blossom and wisteria vine; really simple!

 

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Lillian is jealous as Pingo gets along very will with Stitch.

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Perfect baguette push cut.

 

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Another tribute to 1966 (after Simon and Garfunkel) and to the first round debate of the last french presididential election: Pingo and pudeurs de gazelles!

 

Pingo and the pumpkins: the blade’s belly shape concentrates cutting power and Pingo sinks in with ease. Sorry Linus!

 

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The wire clip enables Pingo to be snug real deep in the pocket.

 

Now we know whom Prokofiev’s three oranges really love!

 

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Just before the soup, where is Pingo?

 

Pingo Star and the groupies!

Choosing a knife for the city.

You don’t need a reason to carry a knife.
Whatever they ask you, just lie or tell them what they want to hear.
In the woods or in the countryside carrying a knife, whatever your gender, is wise.
But in the city ?
You really think you will defend yourself with a knife ? Let’s forget about it. A chair, a stiletto shoe, an ashtray will be better defense tools if you know how to train your mind first. And be prepared mentally whatever your gender, is wise.
Knife is not the best tool to get away of trouble. It’s like playing with matches in a gaz tank. It’s used by madness and idiots to create horrors. So unless you want to be an idiot.
Since knives, cheap and ugly dull knives, are often used to hurt people. Worst, some people think knives has been used when they were not even in history.
An example ? When Lucheni, a madman, has stabbed the Empress Elisabeth of Austria in Geneva he did it with a file. “There was no blood on the file and the tip was broken off, which occurred when Lucheni threw it away. The file was so dull in appearance it was speculated that it had been deliberately selected because it would be less noticeable than a shiny knife, which would have given Lucheni away as he approached.”
So you want to carry a knife in the city. It’s your choice, your business. Nobody else business. Your freedom of choice. In those days where metal detectors are common and official journalists are scanned all over their body before filming some president from ten yards away, when policemen can search you with no good reason because of the state of emergency… you better carry something which is small and sheeple friendly.
Better: you should conform with the laws of your country.

Younger I felt some kind of thrills being an outlaw. My first knife even was a folding AF dagger from Gerber. Go figure ! But later, I have found it is more fun to be lawful and cleverly respect the rules, because it gives you the occasion to try new designs and new makers. Of course you can always carry a Swiss Army knife. I almost never do. It’s in my bag not in my pocket. Because since the 90’s I have fallen in love with clips. Clips are such a great way to avoid a pouch or a scabbard or anything used to say to the world: I carry a knife !! So the clip is mandatory for me. My last clipless knife has been slipping under my wallet and at the Airport it has been taken away from me. So no more clipless knife for me.

So, in the city, I need to follow the rules and I need a flat design clipped to a pocket’s lip. Again a thick Victorinox Swiss Champ is a no-no as is an rounded handle Opinel. Opinel are not for the city unless they are under N°8. And I want a slick design something easy in and easy out without telegraphing around I’m going to use it.
I love the Worker design from Sal Glesser , the very first clip it, which could be used without opening it completely the blade thanks to its false edge. Very clever.
In the city I want elegance. the object needs to be warm and tell a story. I’m not a predator, I carry a tool not a weapon. For the records, hammer, screwdrivers are much more lethal than any Perrin Lagriffe destined to wound and not kill. I like to be able to cut my food without using the dull silverware of restaurants. Because there is some places which are not fast food too. And even at the Macdonalds, using a sharp knife can help to share in two portions a single burger. But in restaurants nowadays it’s not common to find good steak knives. I always enjoyed bringing my own knife like my grandfather used to and that manner that my father hated so much. My father was carrying a switchblade for SD and then a La Griffe. He also used a small turtle shell slipjoint folder made in Nogent in his bag. The exact opposite of my way. Strange how generations go counter clockwise just to complete a full circle thinking they are re-inventing the wheel.

A knife, may it be a slipjoint of a locking folder, is a door for adventures. I often walk on the avenue of the Opera remembering Ernest Hemingway.
“He was a customer of the house Kindal, 33 avenue de l’Opéra, he used to go through the shop, after his purchases, to the Ritz, Place Vendôme. His Parisian triangle was the Harris Bar, Kindal then the bar of the Hotel Ritz. His deer stag handle locking folder, with blade, saw, bottle opener and corkscrew, was his daily companion, he even packed his tobacco and curated his pipe with it. The stag’s wood cracked at the end with time and the tobacco was constantly caught in the cracks, obliging him to clean his knife regularly, he had the idea to place an ivory knob, coming from one of his African hunts probably.
Many years after his death, Mrs. May Kindal, found Hemingway’s knife at the bottom of a drawer, left there for maintenance.
She had him reborn by Jacques Mongin, knifemaker and Meilleur Ouvrier de France.
Since then, the Hemingway knife is sold exclusively by the Kindal cutlery.” Translated from Kindal.

I remember the first time I have seen Ray Mears on the TV. He was walking in the beautiful English countryside and he used one of his elegant Woodlore fixed blade to cut some plant and give some stories. Wait a minute, this guy is walking in the UK and carries a fixed blade in his pocket. But as a black belt in Judo he won’t go in trouble with bushcraft knife anyway.

In the city, knives are making conversations. So it will leave your hands for those of a friend who want to see it. And you will be sitting in the sun drinking a cappucino. So the knife needs to be beautiful and smooth and not aggressive in any way because it can be display in public like smartphones and cameras.

I also need the knife to be out of the way, because I carry stuffs in my pockets or I got a messenger back and it happen sometimes: the knife get hooked to something and falls. So the clip and the way to carry it needs to be secure.
It needs to be very sharp also. And stays sharp. Because I’m not going to show my honing and sharpening skills in the street and a dull edge is dangerous for your finger. So, a good geometry and a good steel. A knife thought to be used not only to be displayed.

So here are some examples.

The Delica in its Knifecenter Special Edition is my actual companion. This one is so sharp it goes beyond my scale. HAP40 can be thinly honed, it’s a true razor. More can be found on it following that link:

In the very highest performances you also got Pekka Tuominen little Wonder Nilakka. You can click on its link. Again a little big knife with performance and ergos which change the game of current gentlemen folders.

The Michael Walker is a rare Gem and this Sprint run has proven how excellent it was as a skinner for very serious hunters.

In the Slip It territory the Urban is the perfect companion unless one hand operation is forbidden by the law. The steel of this one just does wonder and I’m thinking a lot about testing the new Police Model…

One of my old little city companion has been that little Tim Wegner Mouse II knife.

Spyderco has covered all the ground about small knives to carry by men or women. The Dragonfly is one of their pure example of acceptable locking Clip It.

My friends Xavier Conil and Laurent Monnier propose an elegant not threatening folder: le Pointu.

This knife got no clip and is not one hand opening but I have bought it in South Africa at the Good Hope Cape’s shop. This is my Southern souvenir. It has no vertical play and got a story to tell.

respecting the Danish law, the Pingo is one of the solutions for having a clipped knife with no opening hole.  The hole here is only a trademark.
There is a Sprint run with Elmax blade and Titanium handle, I often look with envious eyes…

This one is French, it’s JD’s folder a Sacha Thiel which will be reviewed soon. The blade can be open with a gentle flick helped by the thumb and the deep pocket clip makes it disappears.

So here my knives for the city. My Griptilians are too tactical. My small Sebenza has been lost. I could dig my drawers for more but I think you were able to catch my drift.
Here is a following up about choosing a 3 inches folder.

Spyderco Pingo – Do NOT mess with the Danish Cookie

In those days of tactical fever.
In those days of fears.
In this last day after the End of the World.
This is the time to change all the rules.

For the first time , Spyderco is releasing a folding knife with a hole in a blade which is like a blue carrot’s salad for a sniper: useless.
A folder with a hole in the blade so tiny it will only catch germs….

WTF ?

The Pingo is a collaborative effort of Danish knifemakers Jens Anso and Jesper Voxnaes. This knife was specifically designed to conform to the knife laws of Denmark, which prohibit both lock-blade folding knives and all forms of one-hand-opening knives.

(I love copy and paste… from there.)

OK now I’m currently carrying a Spyderco Techno. I love this little dwarven titanium folder but the Pingo ???

The handle looks well thought. The blade is unusual and non threatening. Sober design.
Wait a minute, the Pingo looks like it could be a great EDC.

Spyderco Pingo

Spyderco Pingo

Spyderco Pingo

Spyderco Pingo

Spyderco Pingo

Spyderco Pingo

Spyderco Pingo

Now after two weeks of being in my pocket 24/7 this little Pingo is an excellent surprise.
First thing first…. DO NOT READ THIS IF YOU ARE DANISH BUT: I open it with a flick.
This is good as I do not live in beautiful Danemark.
But beyond that detail, the knife got excellent ergos. Great ergos !
Its a full four fingers handle knife ready for hard work because it has a great belly and a great geometry.
And this knife is a cutting machine.
I was very surprised to see how that little knife was able to handle a lot of jobs with ease.
The belly is on the reason of its high perf. But also the razor thin full flat ground blade.

All in all for a great price you can go legal on a lot of ground with an incredible workhorse. Trust me the Pingo will surprise you.
Kuddos to Jens Anso and Jesper Voxnaes fo bringing it and Spyderco for always giving birth to the most exotic and pragmatic projects.