Military Review

Folding knife anatomy

36
Folding knife anatomy

Blade - the main part of the knife. The cutting and piercing properties of the knife depend on it. The main factors determining the performance of the blade, is the material and technology of its manufacture, as well as its shape and cross section.



Types of section of the blade


The blades of modern folding knives are made of corrosion-resistant steel. On blades of famous manufacturers, the steel grade is often stamped on the blade at the base of the handle. On cheap knives, you can often see the inscription on the blade - “stainless” or “rostfrei”, which means simply “stainless steel”.

Currently, several dozen different grades of steel are used in the knife industry. Since different countries have different standards for the designation of steel grades, the same steel may have different designations. The most common steel grades used to make folding knife blades are shown in the table.

For an inexperienced user, it is enough to take into account the fact that the more expensive the steel is, the longer it keeps the sharpening, but this increases the brittleness of the cutting edge and makes it harder to edit the knife at home.

The quality of the blade is largely influenced by the technology of thermal hardening of steel used by the manufacturer. With proper heat treatment, even relatively cheap types of steel provide good cutting qualities of a knife, and vice versa, even expensive types of steel with flaws in heat treatment will not allow for good quality blade. This is the reason for the high cost of folding knives of well-known manufacturers, who have modern equipment and carefully monitor the quality of the blade.

The hardness of the cutting edge is expressed in units of Rockwell. Usually, the blades of folding knives are hardened to 42 – 60 HRC units. The larger this number is, the more time the knife keeps sharpening, but for this you have to pay less resistance to shock loads and the complexity of sharpening the knife. And, on the contrary, at low HRC values, the cutting edge is more plastic, it is easy to sharpen, but it doesn’t hold up well. As hardness rises above 61 HRC, the blade of knives with a normal butt thickness becomes very fragile. Blade hardened to 42 units and less, it has low strength and it is difficult to cut ordinary materials. On the packaging of knives, this figure is not given. Even when describing a model on the manufacturer’s website, it is not always possible to see it.

When operating the knife, it is necessary to take into account the fact that the blade of the knife is very sensitive to temperature increase. That is why you should not rake the embers of the fire with a knife or use it to sharpen the electric tool for a plumbing or joiner's tool.

The surface of the blade can be polished, brushed, blued, chrome or have a special protective coating.

Polishing increases the resistance of the blade to corrosion, but such a surface glitters in the sun, which is not quite acceptable in tactical knives.
Matting increases the anti-glare properties, but worsens the corrosion resistance of the knife.

When bluing a blade, a thin layer of protective oxide film is created on its surface, and the blade becomes dark in color.

When chrome plating, a thin layer of chromium is applied to the surface of the blade, which prevents corrosion of the blade, but not its cutting edge.

In modern knives, blade coating from synthetic materials (epoxy resins, Teflon), which provide high resistance to moisture or an acid and alkaline environment, is becoming increasingly common. Since this coating prevents the blade from glare in the sun, it is often called "anti-reflective" and is often used for tactical knives. The disadvantage of such coatings is low wear resistance and scratch sensitivity.

Recently, with the cheapening of industrial production of Damascus steel, more and more blades are being produced from it. Damascus steel is produced by forging welding several layers of steel with different carbon contents. As a result, a beautiful pattern appears on the surface of the blade. Modern industrial production of Damascus steels allows you to pre-design the shape of this pattern ("mosaic damask").


Main parts of the blade


The combination of low carbon steel strips providing ductility, and high carbon, providing hardness of the cutting edge, allows you to create blades with excellent performance. In addition, the cutting edge of Damascus steel knives has micro-pliers, which increase the cutting ability of the knife.

Knives with Damascus steel blades look very impressive. However, it should be borne in mind that the risk of obtaining a defective blade of Damascus steel is significantly higher than when purchasing a knife with a conventional steel blade. This is due to the rather complex technology of manufacturing such steel.

Doy, which are often called blood vessels, are longitudinal notches along the axis of the blade and serve to facilitate the weight of the blade. At the same time, they increase the rigidity of the blade in the transverse direction. Sometimes they are cutouts.

Ricasso - the not sharpened part of the blade at the handle serves for convenience of sharpening the knife.

False Blade It came from combat knives with a fixed blade, having a one-and-a-half sharpening.


Reinforced knives


In folding knives used a variety of forms of blades.
For normal household operations, knives with a straight blade or a blade converging to the tip are preferred.
The disadvantage of the classical form of the blade is its lower strength at the tip, since the thickness of the blade gradually decreases to the tip. From this lack of free blades in the form of "tantто" or "modified tant". At the beginning of this century, a special blade form with a reinforced point began to be applied first on knives with a fixed blade, and then on folding knives.


Blade Shapes


If the knife requires increased cutting properties (knives for self-defense), blades with a blade having a convex or wavy shape are used. At the end of the past - the beginning of this century, knives with a sickle blade, which is characteristic of Malaysian kerambit, came into vogue. Such a blade does not cut, but rips the surface of the target like a plow. Knives with such a blade are used for self-defense or for cutting car seat belts.

Knives in which the blade is located at an angle to the handle serve the same purpose. This idea received its maximum development in the knives with the pistol grip of the company "STI".

Flat wedge possesses high performance, combining the strength of the blade and a sharp blade. Due to the uniform distribution of effort well cuts soft materials of great thickness. Disadvantages - the complexity of sharpening, poorly copes with cutting hard materials.

Chisel profile - differs adaptability and ease of sharpening. It is widely distributed on the blades of Asian knives. It has excellent chopping properties, well cuts thin materials.

Flat wedge and its type is a flat-concave wedge with a lead - it is easy to manufacture, it is easy to fix and grind, it performs a shallow cut perfectly. Disadvantages - low mechanical strength, difficulty cutting thick materials due to protruding side ribs.

Wedge-shaped profile has excellent cutting properties. The disadvantage is the fragility of the cutting edge and the complexity of sharpening (it is necessary to sharpen the entire blade plane). From this lack freely wedge-shaped section with a supply.

Pentahedral profile combines manufacturability, durability, good cutting qualities, well-ruled. Disadvantages - the difficulty of sharpening when restoring the cutting edge.

In addition to the blade, folding pocket knives can have additional auxiliary tools - awl, corkscrew, can opener, bottle opener. In the so-called "Swiss Army Knives" (Swiss Army knives) the number of such tools can reach several dozen. Such multi-function knives are called "multitools".


Knives with additional elements


For self-defense, knives with two working blades are also produced, which allow you to hit a target in forward and backward hands without changing the orientation of the knife or changing its grip.

Saw

Part of the blade of the blade may be sharpened in the form of a saw for cutting fibrous materials. In knife literature, such sharpening is called “seryitor” or “serator” (from English serrated - sawtooth). In self-defense knives, serhitornoy sharpening facilitates cutting through the upper dense clothing and can be performed on the entire length of the blade.


Various types of sawtooth sharpening (serytory)


The configuration of the teeth of this mini-saw from different manufacturers may be different. The presence of the drill makes it difficult to sharpen the blade at home - for this you need to have a special tool and skills to work with it, or contact the appropriate specialist.

Structural elements for opening the knife

The design of most modern folding knives allows you to open them with one hand, both right and left. To do this, there are special elements at the base of the blade - cylindrical pins, round or square dies or holes in the blade (the round hole is protected by a patent belonging to the American company Spiderko and other manufacturing companies are forced to use other forms). It is more convenient to open knives with protruding elements - pins or dies, but they reduce the effective length of the blade.


Elements for opening the blade


At the beginning of this century, a special device in the form of a hook on the butt appeared on the knives, which provides automatic opening of the knife when it is pulled out of the trouser pocket. Owners of such knives should be aware that if the pants are made of thin material, then after several cycles of getting the knife, they are likely to be broken.


Automatic knife opening hook


Much less often a special semicircular cut on the blade is found on modern knives. Most often it is used in models that have several working blades or tools, or in knives without fixing the blades, which are well known to the older generation in Soviet times.


Opening cutout


Another element that facilitates the opening of the knife is a flipper (from the English flipper - fin) - a special protrusion on the blade's butt. To open a regular knife, it is enough to move the blade a little by pressing the flipper with a finger of a hand, and then with an energetic swing movement of the hand to bring the blade into working position. In semi-automatic knives, the need for such a move is absent - the blade is adjusted to the working position by a spring mechanism automatically.


Flipper


In addition, the flipper plays the role of a kind of guard, preventing the hand from slipping on the blade.

Structural elements for more reliable knife control

The most common grip of folding knives is straight diagonal (fencing) grip. In this grip the thumb is located on the butt of the blade.


Notch under the thumb


For more comfortable control of the knife in the place of contact of the thumb on the butt of the blade, a special notch is made. The notch may have part of the handle adjacent to the blade.

Lever

The handles of most modern knives have a pack-type construction, consisting of an internal frame (frame) in the form of metal strips liners (liner) and linings. Inside the frame, the elements of blade fixation, the automatic opening mechanism (for semi-automatic and automatic knives) are mounted.

Simple monolithic handles with a groove for a blade or a handle from a bent steel strip are rarely found in modern knives - mainly in the French Opitel and the African Duk-duc.


Monolithic handles


Previously, the connection of the parts of the handle into a single unit was carried out using rivets. The axis of the blade also riveted. In modern models for this, as a rule, screw connections are used. The use of screw connections allows you to eliminate the razbaltyvanie parts that appear during the operation of the knife, to adjust the "softness of the blade," facilitates disassembly of the knife for maintenance.

Torx screws (torx) are used in most foreign folding knives. To work with such screws, you need a special tool - screwdrivers or socket wrenches with the appropriate head. Some companies include such keys in the scope of supply of the knife, otherwise they have to be purchased separately.

The shape of the handle, its cross-section, as well as the texture of the linings determine the convenience and safety of using the knife.

The rectangular cross-section of the knife is technologically advanced in production, but it is not convenient when performing long-term work with a knife. The handle with a round section fits comfortably in the hand, but it does not allow the touch to determine the orientation of the knife. Therefore, the most convenient handle oval.


Handle shapes and sections


The rectangular shape is compact, but it does not provide protection against sliding the hand on the blade. The wedge-shaped handle better protects the hand when working with the tip of a knife, but when you try to pull out a knife stuck in a dense material, the hand will slide off the handle. This form often have small penknives for small household work.

The concave shape of the handle provides a more secure grip, but not quite comfortable. The convex shape of the handle fits perfectly in the hand and is comfortable for work. This is the shape of the handle have proven knives Finnish type.

Even more convenient is the handle of a convex-concave shape and a shape that is often used on tactical knives.

Modern knives are increasingly used handles of complex shape, taking into account the ergonomics of the hand. However, its configuration is calculated as a medium-sized hand, and a person with a large or, on the contrary, small hand, will not be able to fully use its advantages.

Lining

For their manufacture can be used materials of natural (wood, bone, horn) and artificial origin (metals, plastics).

The main advantage of wooden linings is their “warmth” and beauty of natural material. In expensive authoring knives, exotic woods with a very beautiful texture can be used. The main disadvantage is weak wear and moisture resistance. Multi-layer lacquer in some way solves the problem, but it also reduces the reliability of holding the knife in his hand.

Another natural material is horn and bone. The handles of these materials are well polished and look very nice. The disadvantage is that they can crack and are easily scratched.

Metal plates are highly durable, but in the cold season it is inconvenient to use knives with such handles. In addition, they are difficult to hold in a wet or sweaty hand, even if they are notched. In modern knives for their manufacture are used titanium alloys based on aluminum or titanium. In expensive author's knives can be used and Damascus steel.


Texture overlays (top) and additional


Materials based on synthetic resins can mimic the structure of natural materials and at the same time avoid their inherent flaws, although they lose by weight. One of the most popular materials of this type is one of the types of PCB - “Mikarta”.

Recently, more and more lining of various types of plastic, such as ABC, Zeitel (Zitel), Kydex (Kydex), etc. are being used. These materials are technological, waterproof, durable and resistant to the effects of the environment. They allow you to make lining of any shape with any texture pattern - from simple roughness inherent in the material of the lining itself, or a rectangular notch to specially designed surface types. So, in the knives of the series “For those who serve” the company CRKT uses a special honeycomb structure that prevents the knife from slipping in the hand.

For the same purpose are rubber inserts or structural elements-inserts like emery paper.


Lanyard Holes


In the end part of the handles of many models of folding knives there is a through circular hole for attaching to it a lanyard or a pull cord.

Security elements

Although modern designs of blade retainers are quite reliable, nevertheless, as noted above, there is a possibility of accidental folding of the blade. To prevent this, there are special fuses in modern knives. For knives with a lock on the butt, they are usually located in the notch area of ​​the fixing lever. In models with a linear lock, they are located in front of the handle under the thumb. Addition of blade clamps with fuses practically turns a folding knife into a knife with a fixed blade.


Knife guards with butt lock (top) and linear lock (bottom)


In order to safely carry semi-automatic and automatic knives, the fuse must prevent the knife from opening in a pocket of clothing when accidentally acting on the trigger. Therefore, in such knives, the fuse often has a double action - it blocks the blade in the closed and open state.

Clip for wearing

A practically mandatory attribute of modern folding knives is a steel spring clip. In knife literature, the term “clip” is often used to designate it (from English. Clip - clip, clip). It provides a comfortable carrying knife in the pockets of clothing or on a trouser belt.


Different Kinds of Folding Knives


Many manufacturers of knives perform clamp adjustable - that is, it can be mounted on different sides of the handle, depending on whether the owner is right-handed or left-handed. In addition, sometimes you can change not only the side of the clamp mounting - at the base or at the end. In this case, the knife in the pocket will be oriented either with the tip down or up. Some experts believe that when wearing a knife with the tip upwards there is a chance of a cut when trying to get the knife out of your pocket, if for some reason the blade comes out of the handle. At the same time, with this orientation of the knife, it is brought into operation more quickly.


The orientation of the blade in the pocket of clothing at different locations of the clip


In some models of folding knives, the clip attachment point is not Z-shaped, but in the shape of the letter “G” or “P”. In this case, when wearing a knife in a pocket of clothes, the upper part of the handle is hidden from outside gaze - only the spring plate of the clip comes out of the pocket. Outwardly, it looks like an ordinary ballpoint pen.

Elements that expand the impact capabilities

In self-defense knife can be used, and without opening the blade. In this case, it is used as a palmar wand and the blow is applied by protruding parts of the handle from the fist. In tactical knives and knives for self-defense, the end of the handle to increase the effectiveness of such strikes often has a triangular shape or a special percussion element in the form of a cylinder, cone or pyramid.


Impact protrusions at the end of the arms


Concluding the review of the designs of the folding knife, it should be noted that the legality of the knife, that is, that it is not cold weapons, according to the law can only determine the expert. Therefore, when purchasing a knife, you should always ask the seller a copy of the information sheet to the certification test report (in common parlance it is often called a “certificate”). The absence of such a document, whatever the seller may say, may indicate that the knife you liked did not pass the tests for belonging to cold weapons. And best of all, if such tests were carried out by the head organization - “Expert-criminalistic center of the Ministry of Internal Affairs”. It is better to always have a copy of this document with you, which will allow you to avoid unnecessary conflicts with law enforcement officials.


Knife with a copy of the information sheet


The majority of high-quality folding knives on the Russian knife market are products of foreign companies.
Unfortunately, the majority of serial domestic folding knives are inferior in almost all respects to foreign ones, and among them one can rarely find original models.

Russian craftsmen and knife companies prefer to create knives with a fixed blade, and among them there are very original models that have no analogues abroad, including Vitaly Kim’s knives, Kondrat knife, NDK-17 knife (Kochergin’s saboteur knife) . This is largely due to the more sophisticated technology and the expensive equipment necessary for it.

Among the Russian masters, only a few design and produce original folding knives of the author's work, which are not inferior to foreign ones (including the price). The folding knives of the Ural master Urakov and the workshop of the Shirogorov brothers are shown as an example.

The rapid pace of development of the Russian knife industry allows us to hope for the emergence of domestic folding knives, not inferior to foreign models.
Author:
Originator:
http://www.bratishka.ru/
36 comments
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  1. erased
    erased 30 March 2013 10: 15
    +4
    The knife is a tool. It can be used as a weapon. Someone drags him with him, someone not. Lovers collect collections. Specialists know all the features and design options. For everyone else, this is either an extra load or a familiar thing. It's not the same for everybody...
    1. Bosk
      Bosk 30 March 2013 17: 44
      +4
      A knife is not a simple tool ... the very finding of a knife in a pocket at the psyche level adds confidence ... maybe it has formed on the gene level over time ... but that’s what it is.
  2. avt
    avt 30 March 2013 10: 19
    +6
    Quote: erased
    The knife is a tool. It can be used as a weapon. Someone drags him with him, someone not.

    In general, yes, no doubt about whom. But I somehow feel like without a knife - like gypsies without a horse. smile
    1. Mikhado
      Mikhado 30 March 2013 14: 29
      +2
      Quote: avt
      Quote: erased
      The knife is a tool. It can be used as a weapon. Someone drags him with him, someone not.

      In general, yes, no doubt about whom. But I somehow feel like without a knife - like gypsies without a horse. smile

      Same. I know that it’s not a special knife fight, that the rezhik is small for serious hopes of self-defense - but all of a sudden, nedibog, a little red-and-white chance will give it to you. And as a tool at work - every day on the little things.
      I have already had a "strider-tank" for 5 years, where he has not been with me, even withstood the sea water.
      From the very beginning I got used to it, twisted it in my hands for hours, folded it and closed it, as a result, it has been a part of me for a long time, even it doesn’t work to "change" it - I’ll come to the store, spin around, wonder at every thing - well, I have MY piece of iron ? Why else?
      In general, this is love laughing
      1. smile
        smile 31 March 2013 03: 29
        0
        Mikhado
        That's right, you need to love the piece of iron. otherwise she will not reciprocate .... but I don’t wear anything from my small collection ... never ... to avoid triggering reflexes ... and I don’t advise you to hook some freak, it’s hard to wash off .... survivors understand this is not my horror stories, but the harsh statistics of our enforcement .....
      2. rapira62
        rapira62 21 November 2013 12: 48
        0
        don’t even think to pull the knife out of your pocket. If not special in its application locally. They will take it away and not stroke it on the head. If the knife is in my pocket (I always have a knife with me in my bag or jacket pocket (but in the inside). Exclusively for one - cut a stick there, open the packaging, cut the apple. That is for the target. A folding knife with a blade up to 90 mm - it is not a weapon.
  3. Suhov
    Suhov 30 March 2013 10: 40
    +7
    Whoever has a knife is the one with meat!
    1. smile
      smile 31 March 2013 03: 14
      +1
      Suhov
      Killed !!! ... For the spot !!! :))))))))
  4. Bort radist
    Bort radist 30 March 2013 15: 04
    +1
    Article plus, many will "open their eyes", many will now pick up the "look". Twist, twist and grow. We are waiting for the rules of sharpening in everyday life and in the field.
  5. kirpich
    kirpich 30 March 2013 18: 05
    0
    Quote: Bort Radist
    Article plus, many will "open their eyes", many will now pick up the "look". Twist, twist and grow. We are waiting for the rules of sharpening in everyday life and in the field.


    Article minus. The article is about nothing, just the assembly from the site GUNS.ru.
  6. ibn117
    ibn117 30 March 2013 21: 35
    +3
    I’m not going anywhere without a knife, I have Spyderco Military.
  7. kirpich
    kirpich 30 March 2013 23: 01
    0
    Here you read you here, and you understand that the madhouse has not gone anywhere. You very seriously and competently discuss the performance characteristics of MP weapons, both ours and VP, and sometimes cycle on a simple one. Ask me - "What am I?" The answer is - The site is called "MILITARY REVIEW". That's when the knives (folds) will be included in the equipment of a serviceman (RF), then it will be possible to speculate about him here. IMHO of course. (I'm a private, but the generals know better)
    1. Misantrop
      Misantrop 31 March 2013 16: 57
      +1
      Quote: kirpich
      That’s when the knives (folds) go into the military equipment (R.F.)
      Have you heard about the pilot’s knife, stored in a special pocket of the flight suit? And what about a specialized boatswain knife? Both of them are just folding (Soviet). And the regular knife of the US coastal defense forces has been dragging in my pocket for years, a rather convenient multifunctional thing
      1. kirpich
        kirpich April 1 2013 01: 54
        +1
        Do not distort. Besides the flight (aviation) knife and the stroporez (landing), no other knife (folding !!!) is not listed in the outfit of the military man R.F.
        The soldier R.F. not even a full-time knife of the US Coast Guard.
        "Boatswain", "Officer" knives are also not included in the equipment. They are purchased FOR YOUR OWN money. I can say this, as I myself worked in the seas on rescue tugs in Vladivostok.
        1. Kir
          Kir April 1 2013 03: 16
          0
          Well, the states have a separate song for them and the police have their own, if not their own variants of storage, as far as I remember indulging in a Spaiderco sim, some models of which with a serierer are supposedly guaranteed to cut a steel cable as much as 8mm!, MOD (Master Of Defenses) let's say frankly a company with freaks , one line of Mark V Atac is worth what or Scorpion, now also the Italians Extrema Ratio with its series of storage for specialists.
          That's just considering what kind of Shtatov fighters they are, taking them as a criterion is problematic.
        2. Misantrop
          Misantrop April 1 2013 12: 17
          0
          Quote: kirpich
          In addition to the flight (aviation) knife and the stroporez (landing), more than one knife (folding !!!) is not listed in the outfit of the military man R.F.

          Is this the fault of the military itself or the industry? What the "wise" leaders will score into the supply list will be there. By the way, the sling cutter is not folding, I have it. And how long have fighters had to buy for their bayonet knives? The fact is that they are designed and produced. And what is not in the list of supplies, so in the Ukrainian army, for example, a soldier has to acquire a fair amount of the uniform for his own ...
          1. Misantrop
            Misantrop April 1 2013 15: 14
            0
            And here’s a homemade analogue of a flying knife. Steel on the blades is better and liner locks on both. For more than 15 years, he has been serving properly
  8. Alikovo
    Alikovo 31 March 2013 00: 10
    0
    recently bought a folding knife with a flat concave blade a handy thing when working with wood.
  9. Zomanus
    Zomanus 31 March 2013 03: 00
    0
    Good review for beginners. True amused ripping seat belts with kerambit.))) There is generally a standard sling cutter with serioretom.
  10. smile
    smile 31 March 2013 03: 11
    +1
    Thank. So far, almost no cold weapons have appeared on the site (well, or I haven’t noticed such and such) ... but this is a whole world .. :)))))). I hope this review article is just the beginning, a trial ball ... really hope ...
  11. kirpich
    kirpich 31 March 2013 08: 55
    +1
    Quote: Alikovo
    recently bought a folding knife with a flat concave blade a handy thing when working with wood.



    Dear "ALIKOVO", any knife is suitable for working with wood. The main thing is that it is sharp.
  12. DimYang
    DimYang 31 March 2013 12: 25
    +1
    The knife is an extension of the hand. Including folding. This kid will never fail, unlike a firearm (no one is insured against defective ammunition). Sometimes he is the last chance and if you are "friends" with him, he will help you not to miss it.
    1. Kir
      Kir April 1 2013 03: 01
      0
      Will it never fail? and pericale? And with regards to being friends, so that a friend is faithful, he must be able to correctly choose, and how to do this rely on advertising? Forgive me, either an acquaintance should have a seasoned person, or that it would be optimal to have a familiar legal master, so that the product is correct and the paper is correct white.
      1. DimYang
        DimYang April 1 2013 21: 10
        0
        Quote: Kir
        And with regards to being friends, so that a friend is faithful, he must be able to correctly pick up


        Here it all depends on you.
        1. Kir
          Kir April 1 2013 21: 26
          0
          Well, let’s put the principles of selection for the tasks I know, but forgive me how should I determine the blade when buying, corny file? Well, I learned well that the hardness is over 56, and then? and besides, for one 56 it’s already with normal leave, for the other I’ve got over it, and for someone who didn’t say to run into defects, there is always a chance, especially now where so many left offices have bred, and all the polls are straightforward experts hell knows what generation, during the Union there weren’t as many cool specialists as it is now, and it turns out with all the patriotism, with a decent amount, it's easier to buy the same Extreme Ratio. Amer simply never believed in quality.
      2. rapira62
        rapira62 21 November 2013 12: 55
        0
        There is a channel on youtube about knives. Search enter vininul and watch videos. There is a whole world of knives and everything about them. And a book appears in gun shops - I don't remember the author (like a Russian surname). This book is called "To help the one choosing a knife." I advise.
  13. kirpich
    kirpich 31 March 2013 13: 23
    +2
    Quote: dimyan
    The knife is an extension of the hand. Including folding. This kid will never fail, unlike a firearm (no one is insured against defective ammunition). Sometimes he is the last chance and if you are "friends" with him, he will help you not to miss it.



    Dear DimYang. You probably won’t believe me, but, a sword, a sword, a saber, a broadsword, and others like them, the same continuation of the hand. True, they also have flaws (marriages), as a result of which they ... umm ... break down (So you never thought about how you can chop off an enemy in Snegka and save your blade?)
    Therefore, the knife is not a "continuation of the hand", but a working tool for life support (well, or, survival)

    PS ... the last chance to survive - your arms, legs, teeth (remember the rats cornered)
    1. DimYang
      DimYang 31 March 2013 17: 31
      +1
      Quote: kirpich
      Dear DimYan. You probably won't believe me, but sword, epee, saber, broadsword, and others like them, the same extension of the hand. True, they also have flaws (marriages), as a result of which they..mmm .... break (So YOU ​​never wondered how you can cut yourself with the enemy in Collision and keep your blade?) Therefore, the knife is not "continued hands ", and a working tool for life support (well, or, survival) Shl ... the last chance of survival is your arms, legs, teeth (remember the cornered rats)


      Well, these very decent "cold - cutting" objects were previously in use, now - alas. But the knife can be worn even now. I've never seen a knife break from self-defense. In the past, the felling did not take place exactly the way it is shown in the movies or elsewhere. Indeed, from the impact of the blade on the blade, they often broke, but they were not cut with knives. But the fact that you have not heard about combat knives (judging by your remark) is somewhat strange to me. Although you are right about one thing, sometimes it can happen that you will not have the strength to hold even a knife. At this point, one thing remains - teeth. Although this is unlikely to help. After all, in humans, they are rather weak.
  14. Slavs
    Slavs 31 March 2013 14: 07
    0
    Like any man I love weapons and knives including ... I have a magnum, the same borke, only cheaper, I picked up the hour by the hand in the store ... Which is typical, I love and .... I'm afraid. They cut my comrade in 97 with me ... Comrades dragged me to the hospital, thank God is alive ... And then it got scary ... And still ... I don’t know how to overcome ...
  15. Kir
    Kir 31 March 2013 14: 53
    +8
    I apologize. But the article was written by a person somewhere superficially clutching about knowledge, we will start from a small sharpening I will not rewrite it, but in normal it can be
    1-decaying
    2 razor sharpening
    3-intermediate between shaving and saber
    4-sided
    6 and 7 are only special cases of general
    As elsewhere, each has its own advantages but also disadvantages
    1 durability + good ability to regrind and maintain functionality after editing, the cutting is not very, when editing, if you do not bother, most likely there will be a banal angle
    2-good cutting with a fairly thick butt is light, the strengths of the blade and the inability of competent sharpening can flow smoothly into type 3, or double razor, it can also be easily set on fire, summing up the difficulty in correct editing, and the regrinding cycles without thinning the butt with approximate preservation of the original sharpening a little
    4-sided is a very specific application, but in some cases it is simply indispensable, by the way, a competently sharpened chisel has two angles such that it is working and more gentle, reducing weight, facilitating re-sharpening and the ability to crawl, by the way, as a substitute, sometimes the type of clean wedge is suitable , ensuring a clean cut on one side.
    5 full regrinding and not editing every time or at the finish 6-7 type
    Now with regards to nonsense about the electric sharpener, and the author knows that the same Germans do electric grind with special nozzles to maintain the angle of sharpening? Here, soon the question is about the abrasive itself and speed, by the way the mode also depends on the material of the blade itself.
    All heat treatment and not just hardening determine the quality of the blade, coupled with the steel itself. And besides, somewhere already here on the military wrote hardness depends on the Application !!! By the way, the selection of material also largely depends on the application, with regards to the price, well, generally there are far-fetched special steel applications that are generally not used for this type of product and not only because of their high cost!
    Projections and other bells and whistles, but what about the fact that the developers suggest this structural element in which case to break automobile glazing?
    And so on and so forth.
    Former toolmaker and sharpener.
    1. kirpich
      kirpich 31 March 2013 16: 47
      0
      Sorry, I can not spit (I do not have enough messages request )
  16. G02.
    G02. 31 March 2013 15: 09
    0
    Yeah interesting. Live and learn.
  17. Massik
    Massik 31 March 2013 23: 37
    +1
    some images have errors, read what you post and respect us reading)
  18. Politician
    Politician 31 March 2013 23: 40
    -1
    A knife is a serious weapon! At a distance of 2-3 meters, it will quite compete with a pistol. I am a law-abiding citizen, but just in case I carry with me 2 "Balisongas" (butterflies), if the situation is not critical, you can use them as "Dulo-dulo" - a palm stick. And if it is completely sour, then the sticks, with a slight movement of the hand, quickly turn into elegant spades. And two spades in skillful hands ...
  19. EXA-2
    EXA-2 April 8 2013 11: 33
    +1
    Quote: kirpich

    Article minus. The article is about nothing, just the assembly from the site GUNS.ru.
  20. Champion
    Champion 20 July 2013 21: 25
    0
    This article is advisable not to use. Here you need to correct through the line.