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Knife Making - Celtic Knife
Knife Making - Celtic Knife
Published: 2017/10/28
Channel: Koss
Forging A Dagger From A Wrench - Knife Making
Forging A Dagger From A Wrench - Knife Making
Published: 2017/09/09
Channel: Jake's Custom Knives
Knife Making - How to Get Started!
Knife Making - How to Get Started!
Published: 2016/04/23
Channel: Walter Sorrells
Making SERAGA Knife Part 1
Making SERAGA Knife Part 1
Published: 2017/02/07
Channel: SLAVIK TELY
Why Can
Why Can't YOU Get Into Knife Making???
Published: 2017/09/24
Channel: Jake's Custom Knives
Knife making - making a Japanese tanto fighting knife
Knife making - making a Japanese tanto fighting knife
Published: 2016/07/06
Channel: Miller Knives
Knife making - Forging a Japanese Sushi Knife
Knife making - Forging a Japanese Sushi Knife
Published: 2017/07/22
Channel: Make N' Create
Knife Making - Dark Nordic Knife
Knife Making - Dark Nordic Knife
Published: 2017/08/19
Channel: Koss
Knife Making Challenge:  Make a REAL Knife in 2 Hours?
Knife Making Challenge: Make a REAL Knife in 2 Hours?
Published: 2017/10/21
Channel: Walter Sorrells
Top Ten Knifemaking Tools for the Beginner
Top Ten Knifemaking Tools for the Beginner
Published: 2015/08/31
Channel: Walter Sorrells
Making FALK KNIFE Part 1
Making FALK KNIFE Part 1
Published: 2017/11/02
Channel: SLAVIK TELY
Damascus chefs knife out of chainsaw chain (knife making)
Damascus chefs knife out of chainsaw chain (knife making)
Published: 2017/09/29
Channel: i don't know i wish i was joking
M9 Bayonet CS:GO - Knife Making
M9 Bayonet CS:GO - Knife Making
Published: 2016/12/10
Channel: Marek Tabi
Knifemaking different knife finishes
Knifemaking different knife finishes
Published: 2017/07/09
Channel: Kaila Cumings
Forging a Knife From Cable
Forging a Knife From Cable
Published: 2015/08/30
Channel: Green Beetle
Knife Making - How to Make A Persian Fighter (Curved Blade)
Knife Making - How to Make A Persian Fighter (Curved Blade)
Published: 2017/03/25
Channel: Simple Little Life
File Knife Making  - Make A Knife From A File
File Knife Making - Make A Knife From A File
Published: 2017/07/11
Channel: Jake's Custom Knives
Why Is This Such A Big Secret In Knife Making?
Why Is This Such A Big Secret In Knife Making?
Published: 2017/07/24
Channel: Ekim Knives
Knife making - making a Japanese Kiridashi utility knife
Knife making - making a Japanese Kiridashi utility knife
Published: 2016/05/10
Channel: Miller Knives
Knife making 300 Spartan Sword
Knife making 300 Spartan Sword
Published: 2016/08/16
Channel: Joey Atilano
Knife making - Damascus CS:GO huntsman knife
Knife making - Damascus CS:GO huntsman knife
Published: 2017/04/17
Channel: Joe the Builder
Knife making - making a mini cleaver style knife
Knife making - making a mini cleaver style knife
Published: 2016/06/09
Channel: Miller Knives
Knife Making - Shadow Razor File Knife
Knife Making - Shadow Razor File Knife
Published: 2017/08/04
Channel: Jake's Custom Knives
Knife making: Making a hunting knife using basic, cheap tools
Knife making: Making a hunting knife using basic, cheap tools
Published: 2016/11/27
Channel: Peter Adamson Knives
knife making - full Steel handle Damascus knife
knife making - full Steel handle Damascus knife
Published: 2017/11/01
Channel: Joe the Builder
Knife Making - Forging A Dagger Out Of A Crow Bar
Knife Making - Forging A Dagger Out Of A Crow Bar
Published: 2017/09/17
Channel: Jake's Custom Knives
Knife Making - Blue Demon Knife
Knife Making - Blue Demon Knife
Published: 2016/08/26
Channel: Marek Tabi
Knife shop update vlog
Knife shop update vlog
Published: 2017/11/17
Channel: Simple Little Life
Knife Making - Tactical Trench Wrench Knife
Knife Making - Tactical Trench Wrench Knife
Published: 2016/11/13
Channel: Jake's Custom Knives
Knife Making: Kitchen Cleaver Knife
Knife Making: Kitchen Cleaver Knife
Published: 2017/08/04
Channel: Black Beard Projects
Knife making - damascus kitchen knife
Knife making - damascus kitchen knife
Published: 2017/10/14
Channel: Joe the Builder
Knife Making: Gyuto Chef
Knife Making: Gyuto Chef's Knife DIY
Published: 2017/09/01
Channel: Black Beard Projects
Knife Making Green Dragon part 1
Knife Making Green Dragon part 1
Published: 2017/09/18
Channel: jacks knives
Knife Making , Material Reduction Knife Start to Finish Part 1
Knife Making , Material Reduction Knife Start to Finish Part 1
Published: 2015/12/18
Channel: wildernessoutfitters
Knife making - Forging a Kukri/Khukuri
Knife making - Forging a Kukri/Khukuri
Published: 2017/09/03
Channel: Make N' Create
Knife Making - Excalibur Dagger From File
Knife Making - Excalibur Dagger From File
Published: 2017/07/15
Channel: Jake's Custom Knives
Knife making - 25mm thick titanium fixed blade
Knife making - 25mm thick titanium fixed blade
Published: 2016/07/13
Channel: DB Blades
Knife Making - Making a Custom Camp Knife
Knife Making - Making a Custom Camp Knife
Published: 2016/12/01
Channel: DropForgedSurvival
Knife Making - 4 Sided Demon Dagger Knife
Knife Making - 4 Sided Demon Dagger Knife
Published: 2017/07/13
Channel: Jake's Custom Knives
Knife Making: Neck Knife
Knife Making: Neck Knife
Published: 2017/01/27
Channel: Black Beard Projects
KNIFE MAKING - Folding knife
KNIFE MAKING - Folding knife
Published: 2017/05/18
Channel: Marek Tabi
Knife Making from 1095 steel - Nostalgia of Red : Part 1
Knife Making from 1095 steel - Nostalgia of Red : Part 1
Published: 2015/06/06
Channel: Igor G
Knife Making / Hand Made Knife / Full Process / Oldest Way Of Making Sharp Cutting Tools
Knife Making / Hand Made Knife / Full Process / Oldest Way Of Making Sharp Cutting Tools
Published: 2017/08/20
Channel: AroundMeBD
Sushi Knife - Making an Iconic Kitchen Tool
Sushi Knife - Making an Iconic Kitchen Tool
Published: 2016/09/29
Channel: Walter Sorrells
Knife making: scalpel style wharncliffe
Knife making: scalpel style wharncliffe
Published: 2017/02/01
Channel: DB Blades
Knifemaking: Monsterously thick Kukris!
Knifemaking: Monsterously thick Kukris!
Published: 2017/10/21
Channel: DB Blades
Knife Making - BATTLEFIELD 1 HELLFIGHTER BOLO KNIFE
Knife Making - BATTLEFIELD 1 HELLFIGHTER BOLO KNIFE
Published: 2016/10/21
Channel: Miller Knives
TomP Knifemaking - Knifemaking dla opornych: Wyprowadzanie szlifów/Jig z litej sosny
TomP Knifemaking - Knifemaking dla opornych: Wyprowadzanie szlifów/Jig z litej sosny
Published: 2017/07/17
Channel: TomP Knifemaking
Knife making - Forging a Frontier Knife from Rusty Leaf Spring
Knife making - Forging a Frontier Knife from Rusty Leaf Spring
Published: 2017/04/03
Channel: Make N' Create
Basic Knife Making Tools - Part 1of 3 of a YouTube knife making class
Basic Knife Making Tools - Part 1of 3 of a YouTube knife making class
Published: 2016/04/29
Channel: Simple Little Life
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Jere Davidson engraving a knife

Knife making is the process of manufacturing a knife by any one or a combination of processes: stock removal, forging to shape, welded lamination or investment cast.[1] Typical metals used come from the carbon steel, tool, or stainless steel families. Primitive knives have been made from bronze, copper, brass, iron, obsidian, and flint.[1]

Materials for blades[edit]

Different steels are suited to different applications. There is a trade off between hardness, toughness, edge retention, corrosion resistance, and achievable sharpness. Some examples of blade material and their relative trade offs:

  • The newest powder metallurgy steels can be made very hard, but can quickly wear out abrasives and tooling.
  • A blade made from low carbon or mild steel would be inexpensive to produce and of poor quality. A low carbon blade would be very hard to break, but would bend easily and be too soft to hold an edge. High carbon (or high alloy, in some listings) can take a much higher hardness but must be tempered carefully after heat treatment to avoid brittleness.

Unusual non-metallic materials may also be used; manufacturing techniques are quite different from metal:

  • The natural volcanic glass obsidian can achieve a nearly molecular edge (high achievable sharpness) and only requires stone age technology to work,[2] but is so brittle that it cannot maintain that sharpness for very long. Also the entire blade is very easy to break by accident. Obsidian is used to make extremely sharp surgical scalpels.[3]
  • Ceramic knives hold their edge for a long time, but are brittle.

Blade making process[edit]

Initial forging[edit]

The initial shaping of a knife is done through forging or blanking.

When forging, the blade material is heated to a high temperature or forging temperature in a forge and shaped with a hammer on an anvil to achieve the desired shape, often to near final dimension, where very little stock removal, if any, is required to finish. Steel can be folded either to form decorative pattern welded steel or to refine raw steel, or as the Japanese call it, tamahagane. Grain size is kept at a minimum as grain growth can happen quite easily if the blade material is overheated.[4]

In a mass production environment, or in a well equipped private shop, the blanking process is used to make "blade blanks." This can be achieved by a number of different methods, depending upon the thickness of the material and the alloy content of steel to be cut. Thinner cross section, lower alloy blanks can be stamped from sheet material. Materials that are more difficult to work with, or jobs that require higher production volume, can be accomplished with water jet cutters, lasers or electron beam cutting. These two lend themselves towards larger custom shops. Some custom knife makers cut their blanks from steel using a metal-cutting bandsaw.

Knife makers will sometimes contract out to a shop with the above capabilities to do blanking. For lower production makers, or lower budgets, other methods must suffice. Knife makers may use many different methods to profile a blank. These can include hacksaws, files, belt grinders, wheel grinders, oxy-acetylene torches, CNC mills, or any number of other methods depending on budget.

Grinding[edit]

Edmund Davidson grinds a blade

If no power equipment is available, this can be done with files if the piece of steel has not yet been hardened. Grinding wheels, or small belt sanders are usually what a beginner uses. Well equipped makers usually use a large industrial belt grinder, or a belt grinder made specifically for knife making. Pre-polish grinding on a heat treated blade can be done if the blade is kept cool, to preserve the temper of the steel. Some knife makers will use a coolant mist on the grinder to achieve this.

belt grinder for knife making

Heat treatment[edit]

Methods of heat treatment: atmosphere furnace, molten salt, vacuum furnace, coal (coke) forge, oxy/acetylene torch. Quenching after heat treatment differs according to type of metal and personal preferences. Quenching can be done with oil, animal tallow, water, air, or brine.

Blade finishes[edit]

The finish quality of the blade is determined by the Grit of the finishing grind. These can range from a low-shine 280-320 grit finish to a mirror-shine. The high polish shine can be accomplished by buffing with chrome oxide (ex. white chrome, green chrome), hand rubbing with extremely fine wet-or-dry abrasive paper, or with a Japanese water-stone, which has an approximate grit of 10,000-12,000. Most high quality manufactured knives have about an 800 grit finish.[citation needed]

Handle making process[edit]

Handle making can be done in several different ways depending on the tang of the knife. Full tang knives usually have handle scales either pinned, riveted, or screwed on to the tang itself while knives without a full tang may be inserted into a solid handle and then attached in one of the previously stated methods. Handle materials can range from natural materials including wood or elk horn to man-made materials like brass, plastic, polymer or micarta. A knife makers grinder may have additional attachments for making knife handles, such as small diameter contact wheels.

Attachment for small wheels used in making handles for knives.

References[edit]

  1. ^ a b Barney, Richard W.; Loveless, Robert W. (March 1995) [1977]. How to Make Knives. Knife World Publications. ISBN 0-695-80913-X. 
  2. ^ Hodgson, Susan Fox (2007). "Obsidian: sacred glass from the California sky". Myth and Geology. Geological Society of London. p. 308. 
  3. ^ Buck, BA (March 1982). "Ancient technology in contemporary surgery". The Western journal of medicine. 136 (3): 265–269. ISSN 0093-0415. OCLC 115633208. PMC 1273673Freely accessible. PMID 7046256. 
  4. ^ Goddard, Wayne (2000). The Wonder of Knifemaking. Krause. pp. 107–120. ISBN 978-0-87341-798-3. 

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