The spey knife blade shape features a straight edge that curves up at the end, a small clip on the back, and a very slight point. It is used for skinning and speying animals. The combination of straight edge and small curve make the knife very effective at skinning different kinds of animals.
However, the lack of a sharp point means the knife cannot be used for piercing anything. The dao knife blade shape features a single sharpened edge and a straight spine. It is a variation of the dao sword, which is a traditional Chinese single-edged sword.
It is used mostly for slashing and chopping. Dao knives often take the form of cleavers used to chop foods in the kitchen. The single curved edge chops effectively and the dull, straight spine improves safety. The talon knife blade shape is very similar to the hawkbill knife blade. However, instead of a square-looking back that curves down steeply at the end, the curve is more gradual, giving the blade a shorter, talon-like appearance hence the name. It is used in much the same manner as a hawkbill blade, by pulling the blade back for cutting materials such as carpet and linoleum.
The sharp point is good for piercing, the sharp edge cuts efficiently, and the dull back protects your fingers from cuts when applying pressure. A gut hook is more of an individual feature than a type of knife blade shape in itself. A gut hook knife blade is any blade that features a hook on the back of the blade. This small sharpened hook appears out of the spine near the end of the blade. The harpoon blade features a sharp edge and dull spine. The spine features an upward ramp on it. All harpoon blades have the upward ramp on the back, but aside from that, there are many variations in appearance.
Some are pointed like a spear or feature straight or curved edges. Usually, the belly remains straight, with a gentle curve appearing in the top third of the blade. The harpoon knife blade shape is mostly used for cutting tasks. The ramp on the spine offers extra stability and safety, offering the ability to apply pressure for increased cutting force.
The leaf knife blade shape features a sharp edge that curves upward and a dull spine that slopes downward to meet it. It also usually has a large hole at the end of the spine nearest the handle, used as a thumb hole for easy deployment. A thumb ramp over the thumb hole features grip jimping, which allows you to hold the knife easily. The benefits of this type of knife are the sharp point, easy grip and deployment, and small compact size.
However, the fine point can chip and break after regular use. The serrated knife blade shape features a sharpened edge with notches, usually called teeth, that make it excellent for cutting. This type of knife is usually single-edged. It is used for kitchen knives, some pocketknives, and any other knife that will be used primarily for slicing and cutting. Serrated blades are more difficult to sharpen than smooth blades, but they stay sharper longer because there is less contact area.
They cut faster than smooth edges, but the cut is not as clean or precise. The drop point is a suitable design for hunting knives, particularly when skinning an animal the design of the drop point is careful not to puncture its internal organs. However, you will find that many knives employ drop point blades because they are also suitable for everyday uses.
A trialing-point blade has a back edge that curves upward to end above the spine. This allows a lightweight knife to have a larger curve on its edge and provide a larger cutting surface. This design is optimized for slicing or slashing and is common on skinning knives and filet knives. A spear point blade is symmetrically shaped with the point aligned with the center point of the blades axis.
True spear point blades are doubled edged with a center spine, like a dagger or spear head. The spear point is one the strongest blades in terms of penetration stress, and is found on many thrusting knives, such as the dagger.
Often single edged knives without a central spine are confused with the spear point, such as a pen knife. Close to the tip of the blade, the edge angles upward to meet the spine at a straight or slightly convex angle.
This produces a very strong and durable tip to the blade due to the blade thickness present at the tip, but also slightly decreases its effectiveness for piercing. These blades can be difficult to sharpen due to the angle presented at the tip of the blade but have found a home in modern knife culture as a very popular blade type.
Originally used to trim the hooves on sheep, the sheepsfoot blade is popular for fine work such as woodcarving or even electrical work. Sheepsfoot blades also have a long history of being used on ships to cut rope because when a ship rocks suddenly you are unlikely to stab yourself with the blade.
A hawkbill style blade is simply a blade that has a concave cutting edge and a claw like shape. The shape of the blade and cutting edge allows the hawkbill to grab material easily and reduces the risk of accidently stabbing yourself if you slip up. Hawkbill blades also have a long history of being used as a slashing weapon in eastern cultures. These classic profiles are utilized worldwide and their uses honestly depend on whose hand the knife is in.
I suggest finding what knife feels the most comfortable for you and works for your purposes. Make sure to take other peoples advice with a grain of salt. The knife you carry is a personal affair and only you can determine what blade type you prefer. Make sure to bookmark this blog, email it to a friend or add our RSS feed. Stay tuned as we explore the anatomy of knives in my next post. Stay an Edge above the Rest!
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