How to choose a knife? How to choose a good knife

The beauty of knife first comes from the embodiment of practical function. The Japanese knife is very famous, but I don't think its design is reasonable. Its crescent shape is formed naturally in the process of refining the knife. Good for slicing but not stabbing. One hand knife can really fully show all the knife skills of the shape is the Chinese waist knife.

First, length; The length of the one-handed knife standing on the ground should reach the user's belly button. The knife should be held to the ear. The length should depend on the user. Too long for a roundabout. Short and lose on the battlefield. So if you only use a short knife, you must be a very good knife.

The weight of the knife depends on the strength of the individual. But regardless of the weight, the center of gravity of the knife is the most important. The center of gravity of a good knife should be one punch away from the guard, that is, about 10cm. Before the center of gravity, it is easy to fall when cutting, and it is not easy to return the knife. After the center of gravity, the tip of the knife flutters, and the piercing power is not enough. So a real knife grip must be all metal. Otherwise, the counterweight won't be enough. Focus should not only consider before and after, but also consider left and right. If the center of gravity of a knife is not biased, and the blade stands on the ground and does not fall, it can be considered a treasure knife.

The use of the knife is mainly divided into two aspects: attack and defense. As a weapon, the more striking points, the richer the skills, the greater the power. The striking point of a single knife should mainly be the tip of the knife, the blade, the front guard, the copper protrusion behind the handle and the knife color ring.

First say thorns; The thrust is the main attack technique of the knife. So in the design of the knife when the shape is very high requirements. If a person is not trained, let him stab a target. He will naturally point his hand at the target in the shape of a sword. This is the "directivity" of weapons. This characteristic requires the grip of the weapon to bend down at an Angle, like the handle of a revolver. Hold the handle at this Angle while the tip of the blade is in line with the finger of the sword. Even in the dark we can hit a point without aiming. The main function of a sword is to sting. But because of the limitations of the shape, it is only suitable for flat thorns. Because the handle of the Japanese knife is bent upward, the back handle is held against the forearm, and the tip of the knife will be more than ten centimeters higher when it is used as a piercing action. It's hard to stab a target without professional training. Therefore, the most favorable shape for piercing is our Chinese pressure grip (pistol) grip.

Then there's the knife-tip design. The most powerful shape is the tip profile that forms a multi-faceted combination. Five sides in one or seven sides in one. This can split the body tissue quickly after penetrating the body. It's better than just a cone. This shape first appeared in Tang Da Dao.

Again, split; The best weapon for cutting is the axe. With reference to the axe, the design edge of the knife should be made into the axe blade. And the blade should be lower than the center line of the weapon and forward, forming a forward arc. The cut should be on the front 3/4 of the knife. Forward can use inertia to strengthen the force. The larger the first quarter arc, the better. This creates a smaller Angle between the front part and the enemy's body when the knife cuts out. So that the chopping action actually produces the effect of cutting saw. The Japanese knife arc bend is in the middle, which is not very reasonable. The hard Qigong knife that many people perform to cut the abdomen is actually a deceptive trick. Because there's no relative motion between the blade and the skin. If it's cut, he can't stand it. High - quality iron has been folded and hammered to form a pattern. Zoom in and see the cutting edge is actually serrated. So many precious swords can cut silk scarves in the air, the reason is this. Damascus knife and Mongol knife are very curved shape. Very good for immediate chopping. The forward arc is also easy to give the opponent the illusion that the hand has not arrived, the knife has arrived.

Close to the hand guard 20-30 cm place does not need to open the edge, this part is mainly used to block. The inward arc increases the "hanging" force. Sometimes a one-handed knife can be held with both hands. The Japanese knife has a long cutting edge, and the grip must be lengthened if you hold it with both hands.

The tool section should be a T shape. This will increase the strength of the knife. And the Chinese sword method often uses the other hand to press on the back of the knife for strength. We block mostly with the back of a knife. So the back of the knife should be more than 5MM thick.

There is no good design in the history of hand guard design. Because the general hand guard is only used as a protective function. Few people consider its use function and strike function.

I designed a whole grip myself. The main innovation was the design of a funnel shape near the hand guard. Because you can't kill with a knife. The position and strength of the knife are also different when the force is different. The knife should rotate flexibly in the hand. And the most important thing is the match between the jaws and the handle. So I designed a funnel-shaped front grip. This grip works with the jaws to make the knife more coordinated when rotated in the hand. Especially the backhand knife and the backhang.

The hand guard S shape is the most reasonable. The upper guard hand forward can lock the opponent's weapon. The lower guard is bent back, first to increase the opponent's protection, and second to increase a strike point. There is boxing in the sword; For example, if I use a knife to cut down my opponent and encounter the other side's blade blocking, I immediately rotate the blade with the contact point as the center of the circle and change the split knife to punch. That's when the gauntlet becomes a weapon. The hook action is used in close quarters, and the end of the handle can also be a striking point. So it makes sense that this part should be designed to curve forward. It also increases grip. The ring should also be strong and sturdy. We use the punch to break the skull here.

The grip profile of the sword must be oval. This way, even if you suddenly encounter an enemy in the dark, you will know the direction of the blade when you grasp the grip. The palm method in martial arts also has a palm edge called the palm knife. We cut people with the palm of our hand without thinking about direction. Therefore, the plane of the knife and the face of the hand should be on the same surface, so that the knife is like the palm. I see a lot of saber designs in the movies and now have round grips, which is ridiculous. The knife would only serve as a stick. The so-called knife is the extension of the arm, if you hold the way is not right, you can not extend the role of your arm.

The best way to use the knife is to wrap the skin of the South China Sea shark. There is a kind of shark skin with round granular protrusions on the surface, and the largest is at the back. If the leather is placed right in the palm of the hand, it has the best friction and feel. But now there might not even be any sharks.

The hardness of the knife is not the most important thing. No matter how soft steel is, it is harder than human flesh. The shape design can fully reflect the real value of the knife as a weapon. In fact, no matter how good the sword can not use the cutting edge and the opponent frontal bump. Swords like those in Crouching Tiger, Hidden Dragon do not exist. We all know the saying "the sword is like a tiger and the sword is like a swimming dragon". In fact, the sword method is much richer than the sword method. Some sword methods such as "wrapping the head around the head" sword method can not be used at all, without hurting the enemy to wipe their own neck. Like "laughing and proud Lake" Li Yapeng holding a sword just let me laugh off my teeth. The sword can only be used as self-defense, and in chaos, the sword can be held in one hand, the other hand on the ridge, and turned around the body like a shield to protect themselves. Millions of soldiers fighting for their lives in the end have to rely on a single knife, both offensive and defensive.