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A knife is a tool or weapon with a cutting edge or blade, usually attached to a handle or hilt. One of the earliest tools used by humanity, knives appeared at least 2.5 million years ago, as evidenced by the Oldowan tools. Originally made of wood, bone, and stone, over the centuries, in step with improvements in both metallurgy and manufacturing, knife blades have been made from copper, bronze, iron, steel, ceramic, and titanium. Most modern knives have either fixed or folding blades; blade patterns and styles vary by maker and country of origin.
A Japanese kitchen knife is a type of a knife used for food preparation. These knives come in many different varieties and are often made using traditional Japanese blacksmithing techniques. They can be made from stainless steel, or hagane, which is the same kind of steel used to make Japanese swords. Most knives are referred to as hōchō or the variation -bōchō in compound words but can have other names including -kiri. There are four general categories used to distinguish the Japanese knife designs: handle, blade grind, steel, and construction.
Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. Their suitability comes from their distinctive hardness, resistance to abrasion and deformation, and their ability to hold a cutting edge at elevated temperatures. As a result, tool steels are suited for use in the shaping of other materials, as for example in cutting, machining, stamping, or forging.
High-speed steel is a subset of tool steels, commonly used as cutting tool material.
A kitchen knife is any knife that is intended to be used in food preparation. While much of this work can be accomplished with a few general-purpose knives – notably a large chef's knife, a tough cleaver, a small paring knife and some sort of serrated blade – there are also many specialized knives that are designed for specific tasks. Kitchen knives can be made from several different materials.
In cooking, a chef's knife, also known as a cook's knife, is a cutting tool used in food preparation. The chef's knife was originally designed primarily to slice and disjoint large cuts of beef. Today it is the primary general-utility knife for most Western cooks.
Spyderco is an American cutlery company based in Golden, Colorado, producing knives and knife sharpeners. Spyderco pioneered many features that are now common in folding knives, including the pocket clip, serrations, and the opening hole. Spyderco has collaborated with 30 custom knife makers, athletes, and self-defense instructors for designs and innovated the usage of 20 different blade materials.
Christopher Stanley Reeve is a South African-American knife maker, recognized as one of the most influential people in knife making history. Reeve founded Chris Reeve Knives (CRK) in 1984. In 2014, Reeve retired and was inducted into the Blade Magazine Hall of Fame in 2015.
Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties.
A honing steel, sometimes referred to as a sharpening steel, whet steel, sharpening stick, sharpening rod, butcher's steel, and chef's steel, is a rod of steel, ceramic or diamond-coated steel used to restore keenness to dulled blade edges. They are flat, oval, or round in cross-section and up to 30 centimetres (1 ft) long. The steel and ceramic honing steels may have longitudinal ridges, whereas the diamond-coated steels are smooth but embedded with abrasive diamond particles.
Cold Steel, Inc., is an American retailer of knives/bladed tools, training weapons, swords and other martial arts edged and blunt weapons. Founded in Ventura, California, the company is currently based in Irving, Texas, after an acquisition by GSM Outdoors in 2020. Cold Steel products are manufactured worldwide, including in the United States, Japan, Taiwan, India, Italy, China, and South Africa.
W.R. Case & Sons Cutlery Company is an American manufacturer of traditional pocket knives, fixed blades/sporting knives, kitchen knives, limited edition commemoratives and collectibles. The company originated in Little Valley, New York, around the turn of the 20th century, before relocating to its current home, Bradford, Pennsylvania, in 1905. The company's namesake, William Russell Case, first made knives with his brothers under the name Case Brothers Cutlery Company. His son, John Russell ("Russ") Case, worked as a salesman for his father's company before founding W.R. Case & Sons.
Honyaki (本焼) is the name for the Japanese traditional method of metalwork construction most often seen in kitchen knives by forging a blade, with a technique most similar to the tradition of nihonto, from a single piece of high-carbon steel covered with clay to yield upon quench a soft, resilient spine, a hamon, and a hard, sharp edge. Honyaki as a term alone can refer to either mizu honyaki (water-quench) or abura honyaki. The goal is to produce a sharper, longer lasting edge than is usually achievable with the lamination method. The term has been adapted to describe high-end mono-stainless in Japan and carbon blades by non-Japanese bladesmiths that have a hamon but are made with Western steel, heat treat, equipment, finishing, and design.
The Sebenza is a folding pocket knife manufactured by Chris Reeve Knives of Boise, Idaho. It is constructed with a stainless steel blade and titanium handle. Its handle functions as the lock mechanism similar in concept to the Walker linerlock differing in that the handle itself forms the lock bar which holds the blade open. This mechanism was invented by Chris Reeve, and is called the Reeve Integral Lock (R.I.L). It is also commonly referred to as the Framelock, and is one of the most widely implemented locking systems in the folding knife industry, where lock strength and reliability is a product requirement. The name Sebenza is derived from the Zulu word meaning "Work," a tribute to Mr. Reeve's South African origins.
The Umnumzaan is a folding pocket knife manufactured by Chris Reeve Knives of Boise, Idaho, and designed by Chris Reeve. The name "Umnumzaan" is derived from the Zulu language, meaning "Head of the family," or "Boss" (colloq.), a tribute to Mr. Reeve's South Africa origins. The Umnumzaan was designed to meet the needs of operators seeking a heavy-duty folder capable of handling heavy use and even abuse. Building upon the Sebenza’s success, the Umnumzaan features: a stronger pivot joint, a thicker blade, a different blade grind with a reinforced tip, improved ergonomics, thicker titanium handles, a thicker titanium lock bar, a stronger ceramic ball detent system, a larger titanium spacer, a phosphor-bronze washer system designed to act as a ‘dry-sump’ to retain lubrication and keep dirt out, an oversized ambidextrous-thumb studs & extended lock bar to aid operation when wearing gloves, a lanyard pivot joint that uses pivoting lanyard tie bars, and a deeply textured grip.
Chris Reeve Knives is an American knife manufacturing corporation with international sales and distribution headquartered in Boise, Idaho, that designs, develops, and sells folding pocket knives and fixed-blade knives. Its products include the Sebenza, Inkosi, Umnumzaan, TiLock, Mnandi folding knives, Impinda slip joint, and the Green Beret, Pacific, Professional Soldier, Nyala, and Sikayo fixed blade knives. Chris Reeve Knives' industry contributions include the Integral Lock, contributions to the blade steels CPM-S30V and CPM-S35VN, and has won Blade Magazine's Blade Show Manufacturing Quality Award 15 times. Their motto is Think Twice, Cut Once.
Emerson Knives, Inc. is an American company that produces knives and related products. It was founded in 1996 by custom knifemaker Ernest Emerson in an effort to mass-produce his folding knife designs for the U.S. Military and collector markets.
VG-1 is a high Carbon (C) Molybdenum (Mo) stainless steel manufactured by Takefu Special Steel Co., Ltd. It is not the same steel as VG-10.
Crucible Industries, commonly known as Crucible, is an American company which develops and manufactures specialty steels, and is the sole producer of a line of sintered steels known as Crucible Particle Metallurgy (CPM) steels. The company produces high speed, stainless and tool steels for the automotive, cutlery, aerospace, and machine tool industries.
References
- 1 2 3 "CPM S30V" (PDF). Crucible Industries LLC. Archived from the original (PDF) on 2011-07-08. Retrieved 2010-10-11.
- ↑ Gardner, James (June 2005). "Duel of the Titans: two exceptional folders exemplify state-of-the-art". Gun Exllora Domino Dizco Dedra 7inch, tortilladora Maiz I Harina Porfa GrCass Magazine. 27 (6): 145–151.
- ↑ Ward, C. (2008), "An Edge in the Kitchen", Harper Collins, p.33-34, ISBN 978-0-06-118848-0
- ↑ "Types of Steel".
- ↑ Talmadge, Joe (2005). "Knife steel FAQ". zknives.com.
- ↑ "CPM S30V Stainless Steel Data Sheet".
- ↑ "Learn More: Chef Knife Boutique - Kitchen Knives for the Artist Chef".
- ↑ "CPM S35VN Stainless Steel Data Sheet".