So often I see posted where a new forum member or someone new to knives in general is not aware or familiar with what certain Knife terms mean or actually are. So I decided to post a glossary of Knife terms that might be useful for some in their readings on this forum:....Doc
Automatic Knife:- A folding knife using a spring to launch the blade out of the closed position. used by pressing a button located on the handle of the knife.
ABS:-A black amorphous thermoplastic terpolymer with high impact strength.
Alloy Steel:-Steel mixed with other elements for the purpose of creating a product with certain properties. For example steel may have boron added to increase hardness and wear resistance, or it may have chromium added to increase rust resistance.
Annealing:-A heat treatment used on steel to alter its properties, such as strength and hardness. It is accomplished through heating and slow cooling and will result in a softer steel.
Assisted Open:-A knife is one which employs a spring, tension bar or some other device to propel the blade fully open after it has been manually opened partway (typically around 30%).
Almite:-A coating used on aluminum handles similar to anodizing. Resistant to scratching and marring, it can also be tinted to any color for visual appeal.
Alumina Ceramic:-The compound used for Spyderco sharpening stones. It is a ceramic-bonding agent mixed with alumina particles (synthetic sapphires), shaped, then kiln fired at temperatures in excess of 3000 degrees F.
Ambidextrous:-Using both hands with equal ease. Pertaining to knives, it is a knife that is not solely designed for a left-or right-handed person but can be used with equal ease by both hands.
Anodized Aluminum:-Subjecting aluminum to electrolytic action which coats the aluminum with a protective and decorative film.
Back - The back of the blade is the opposite side of the belly, for single edged pocket or bowie knives this would be the unsharpened side. The back can contain lashing grommets, jimping, it's own edge or false edge, and serrations.
Belly - The belly is the curving part of the blade edge. Bellies enhance slicing and may be plain or serrated. One note, the point of the knife becomes less sharp the larger the belly is. When choosing a knife you should decide whether penetration or slicing is the most important, and keep the design of this part of the knife in mind.
Bevel - The bevel is the sloping area(s) that fall from the spine towards the edge and false edge of the blade.
Blade Spine - This is the thickest part of a blade. On a single-edge, flat-ground bowie knife, the blade spine would be at the back of the blade. For double-edged blades, the blade spine would be found right down the middle.
Butt/Pommel - The butt, or the pommel is the very end of the bowie knife. The butt/pommel will be found in different shapes, depending on what features it was designed to implement. Some flat metal butts/pommels are good for hammering. There are pointed metal butts/pommels, known as bonecrusher pommels used on combat fighting knives, combat tactical knives, combat survival knives and large bowie knives. They can be decorative, or contain a lanyard hole. Some butt/pommels are designed to be removed to be able to store items in the handle or may contain an additional smaller blade or tool.
Butt Cap - A metal cap fitted over the pommel is referred to as a butt cap.
Black Ti Coating:-Black Titanium coating is used for protection of the blade from corrosion as well as elimination of reflection.
Back Lock:-Locking system positioned on the spine of the handle that uses a rocker arm, which pivots in the center. A notch on one end of the arm connects with a notch on the blade's tang, locking the blade open.
Balisong/Butterfly:-A knife design believed to have originated in the UK, brought to the Philippines by English sailors, and was adopted and popularized in the Philippines. Often used in Filipino martial arts. The knife has two separate handle sections that rotate round the blade's pivots to create a handle and then rotate back covering and protecting the blade when closed.
Ball Bearing Lock:-A compressive lock wedging a stainless steel ball bearing between a fixed anvil and the blade tang. The ball is also utilized to detent the blade into the closed position.
Batch:-Refers to a knife model that is made in small numbers. A Spyderco batch is 1500 pieces and if the model is received well another batch or more may be produced.
Bi-Directional Texturing:-A texture molded into an FRN handle, which is a series of graduating, sized forward and backward steps that radiate outward from the center of the handle. This texture provides resistance to slipping and sliding when gripped in the hand.
Bolster:-A piece of metal, generally nickel silver or stainless steel, that is located at one or both ends of a folding knife handle.
Boltaron:-A recycled ABS/acrylic PVS extruded alloy sheet material used for making sheaths. It has excellent impact strength and abrasion, chemical, and fire resistance properties.
Bowie-Shape:-A blade with an upswept, curving tip that is double-edged near the point. It is named for Colonel James Bowie who made this shape famous in the 19th century American west.
Caping:-A term to describe the careful and detailed cutting and removing of the hide from a game animal for the purpose of taxidermy. More precisely it refers to removing the skin from the head, shoulders and neck.
Ceramic Hone:-A synthetic sharpening stone as opposed to natural stone such as Arkansas wet stone.
Carbide:-A hard, sharp carbon/iron material used where a very hard material is needed such as in machining or drilling steel. Spyderco uses carbide to make the glass breaking tip found on the C79 Assist model.
Carbon Fiber:-Graphite fibers (the size of a human hair) are woven together and fused in epoxy resin. It's lightweight, three-dimensional in appearance and is a superior (and expensive) handle material.
Cryogenic Quench (Cryo):-During blade production, while still hot, the blade is quenched to a very cold temperature which improves the durability and wear resistance of the steel.
Chamfered:-Grinding a secondary flat surface on a corner, creating a beveled edge. Commonly done to the edges of a knife's handle or the inside radius of a hole making a smoother contact spot for hand/fingers.
Choil:-A choil is a round cut out seperating the cutting edge from the ricasso. It is also used to describe a cut out, molded or formed area where the handle and blade meet which positions/guards the index finger while gripping the opened knife.
Chris Reeve Style Integral Liner Lock:-Custom knifemaker Chris Reeve developed upon, then popularized the Walker Liner Lock in an integral form. An integral liner lock functions as a traditional liner lock with the exception that the liner is actually comprised of part of the handle scale.
Clip-Point Blade:-A blade, ground on the top (spine) in an angled or sweeping line downward. The underside (where the sharpened edge is) is ground upward. The two angles meet at the tip and where the angles meet determines the depth of the blade's belly.
CLIPIT:-Spyderco's trademarked term for their line of folding knives which feature a pocket clip. A CLIPIT fan is often called a CLIPITEER.
Cobra Hood™-A machined flange of steel positioned over the Spyderco round opening hole on the spine of the blade which directs/positions your thumb over the hole for quickly opening the knife blade. See Spyderco C71 Salsa.
Cocobolo:-Hardwood from the Cocobolo tree, ranging in color from bright orange to deep red and dark purple. Its grain and fine texture are relatively easy to work, polishes to a high sheen and is popular as an inlay or embellishment on knife handles.
CombinationEdge:-Blade that is partially serrated, partially plainedge.
Compression Lock:-A Compression Lock uses a small piece of metal that is inserted, from the side, in between the blade tang and the stop pin (or anvil pin).
Cordura:- Cordura® is a certified fabric from INVISTA. It is used in a wide range of products from luggage and backpacks to boots, to military wear and performance apparel. It is long lasting, resistant to abrasions, tears and scuffs. Spyderco utilizes this product on our SpyderPacs.
Crink - A crink is a bend at the beginning of the tang that keeps multi-bladed pocket knives from rubbing against each other.
Dagger:-A grind down the center of a blade equally dividing it into halves. On the SpyderFly only the bottom edge is sharpened and the top of the dagger grind is left unsharpened creating a false edge.
Damascus:-Two types of steel that are folded repeatedly during the forging process to produce very attractive and expensive steel. This new steel retains the properties of the two parent steels.
David Boye Dent:-Custom knifemaker David Boye removed a small arc or dent of metal from the lock bar lever of his knives. This removed piece lessened the possibility of gripping the handle hard enough to depress the lock and accidentally unlock the blade while using the knife.
Detent:-A minute divot or dimple machined into the blade tang. A ball bearing drops into the detent hole when the knife is in the closed position, holding the knife blade closed inside the handle.
Diamond Coating:-The mechanical entrapment of diamond crystals into a metal substrate. This process operates by depositing metal, layer by layer, from a plating solution until enough metal is built up around the diamond crystals to hold them in place.
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