For knife sharpeners, the blade of a knife is of course relevant. This needs to be kept sharp or made sharp again in order to achieve an optimum and frustration-free result.
Ideally, knives should be sharpened evenly and without burrs from the tip of the knife to the end of the blade base. Depending on the sharpening process, this goal is more or less easy to achieve.
All the parts of a typical knife to be sharpened are covered below - and some more.
The part of the blade that is not in the handle is called the blade sheet.
Cutting edge
The cutting edge is the sharpened side of the blade that is used for cutting. Certain types of knives, such as daggers, can also have two cuttin.
The cutting edges can be very different. They can be smooth (for clean cuts), partially serrated or serrated (for bread or ropes). The cutting edge can be straight, convex or concave.
The tip of the blade is the front, usually pointed end of the blade. It is usually the most sensitive part.
It is used for precision work such as stabs and fine cuts. On kitchen knives, the tip can be very useful for detailed cutting work, while on combat knives it is mainly used for thrusting movements.
Back of the blade
The back of the blade is the unpolished, thicker upper side of the blade. It is primarily used for stability and balance.
On outdoor knives and combat knives, the back can also be used for striking or for using a fire steel. The back can also be fitted with a so-called gut hook for working on hunted animals.
Flank
The flank is the flat surface of the blade on both sides of the cutting edge. It can be engraved or patterned and has a decisive influence on the weight and, of course, the aesthetics of the knife.
Bevel / Wate
The bevel is the area between the flank and the cutting edge, which is bevelled to varying degrees depending on the grinding angle. It determines the cutting angle and therefore the sharpness and durability of the cutting edge.
There are different types. One-sided bevels are often found on bread knives or cheese knives. Two-sided bevels are found on most other knives and can even be convex or concave in special cases, which is problematic when sharpening.
Blade neck
The blade neck is the area of the blade near the handle, which is often provided with a ricasso, especially on hunting knives. Manufacturer's details, serial numbers or the steel used are often engraved here.
Blade necks can also be used as finger rests for better control of the knife if required.
2. Handle
The blade is attached to the handle with the so-called tang, the extension of the blade. Depending on the design, the tang may be visible if it extends over the entire height of the handle. Otherwise it is enclosed by the handle scales or the handle.
In the case of inexpensive knives, the tang can be attached by gluing, while higher quality knives can be attached by rivets or screws.
Handle scales
... are the outer parts of the handle that enclose the blade. In the past, mainly steel or wood was used. Today there is a wide variety of handle materials on the market. Wood and steel have remained, but plastics, polymers, rubber, carbon and various metals and alloys have been added.
Handle scales are not only important for the appearance and design, but also for the ergonomics and comfort of a knife.
Bolster
The bolster is the thickened area between the blade and handle and is often found on hunting and outdoor knives as well as some kitchen knives.
It provides additional stability, ideally improves balance and can even serve as a hand guard.
There are different variants. A full bolster covers the entire width of the handle. A partial bolster tapers towards the neck of the blade so that the entire length of the blade can be sharpened without any problems.
Handle end
The handle end is the end of the handle. Of course. If it is thickened, it is called a pommel.
It can be used as a striking tool, especially for outdoor knives and bowies. Some kitchen knives are also used in this way.
Lanyard hole
There is often a small eyelet or lanyard hole at the end of the knife handle. A lanyard strap can be attached here, for example, to secure the knife.
3. Connection elements
Rivets
... are metal pins that connect the handle scales to the blade and thus hold all parts firmly together.
A distinction is made between fixed, i.e. non-removable, rivets and purely decorative rivets, which are attached for aesthetic reasons and generally have no practical function.
Screws
... are modern connecting elements for fastening handle scales and are mainly found on pocket knives. They make it much easier to maintain and replace the handle scales.
4. Other possible elements
In addition to the knife components already mentioned, there are others depending on the type of knife. E.g. opening or locking mechanisms on pocket knives or crossguards on combat knives and hunting knives.
Crossguard
The crossguard is a protruding part of the handle that protects the hand from slipping onto the blade. It is very common on hunting and combat knives.
There are two variants - one-sided (in front of the cutting edge) and two-sided.
Locking mechanisms
Locking mechanisms are systems that secure the blade of pocket knives in the open position. The most commonly used systems are the following.
Liner lock: Here there is a metal plate in the handle that slides behind the blade to prevent it from folding back. To unlock, this plate is pushed to the side.
The frame lock or handle lock is a variation of the liner lock. Here, however, the grip shell itself serves as a latch. Unlocking works in exactly the same way as with the liner lock.
With the lock back (or rocker lock), there is a spring-loaded rocker in the handle. The front end merges into a hook that engages in a groove on the joint of the blade when it is fully extended. The rocker is simply lifted to unlock.
The Axis Lock, also known as the bolt lock, works via the eponymous transverse locking bolt, which engages when the blade is fully extended and thus secures the blade. To unlock, the bolt is simply pushed back.
Some knife manufacturers also offer specially developed, usually patented mechanisms.
Spring mechanisms
... are mechanisms that support the opening and closing of a folding knife, such as with switchblade knives or assisted-opening knives.
Spring mechanism: Blades open automatically at the push of a button. This opening mechanism is prohibited in several countries like Germany.
Assisted opening: In contrast to the spring mechanism, the assisted opening mechanism only supports the opening of the blade to make it easier to open. Manual operation is still required.
Nail nick
The nail nick is a small notch under the back of the blade of a pocket knife. It makes it easier to open the blade with the fingernail.
Flipper
The flipper is a protrusion on the blade neck of a folding knife that allows it to be opened quickly with one finger. It often works in conjunction with a ball bearing.
Thumb stud
This is a small pin on the neck of the blade of a folding knife that makes it easier to open with one hand. It is usually attached on both sides so that the knife can be used with both hands.
Thumb ramp
A thumb ramp is a raised area on the back of the blade that enables better thumb pressure and better control. It is often found on tactical knives.
There is the serrated version for a better grip and the straight version for more comfort.
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