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Knife making: Hunting knife with special handle
Knife making: Hunting knife with special handle
::2014/11/12::
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Knife making - Making knife out of leaf spring
Knife making - Making knife out of leaf spring
::2014/08/31::
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Knifemaking-Damascus steel knife
Knifemaking-Damascus steel knife
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Knifemaking - a knife from old bearing
Knifemaking - a knife from old bearing
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Knifemaking - How to make a knife bevel
Knifemaking - How to make a knife bevel
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Making a Custom Knife for the Antarctic Research Mission
Making a Custom Knife for the Antarctic Research Mission
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Knife Making with Wood and Brass Handle
Knife Making with Wood and Brass Handle
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How to Make a Knife - Bushcraft Knife Making,1095 Steel Similar to a Condor Bushlore, Soup Can Forge
How to Make a Knife - Bushcraft Knife Making,1095 Steel Similar to a Condor Bushlore, Soup Can Forge
::2014/03/28::
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How to Choose Steel for Knife Making
How to Choose Steel for Knife Making
::2013/11/11::
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Knifemaking - knife from a wood saw
Knifemaking - knife from a wood saw
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Traditional Knife Making - Forging a Shear Steel Tanto Blade...full process
Traditional Knife Making - Forging a Shear Steel Tanto Blade...full process
::2014/05/07::
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How to Make a Hunting Knife - Part 1
How to Make a Hunting Knife - Part 1
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Blacksmithing Knifemaking - Forging A Ram
Blacksmithing Knifemaking - Forging A Ram's Head Railroad Spike Knife
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Knifemaking - A small knife is made
Knifemaking - A small knife is made
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中新田打刃物 Japanese Knife Making by Michio Ishikawa[the Fourth] santoku kitchen knives
中新田打刃物 Japanese Knife Making by Michio Ishikawa[the Fourth] santoku kitchen knives
::2014/10/26::
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Making a custom knife for an Infantryman
Making a custom knife for an Infantryman
::2013/05/21::
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Blacksmithing Knifemaking - Forging A Rasp Chopper Knife From A Farrier
Blacksmithing Knifemaking - Forging A Rasp Chopper Knife From A Farrier's Rasp - Part 1
::2014/08/30::
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Knifemaking Tuesdays Week 97 - Enclosure for the Tormach PCNC1100
Knifemaking Tuesdays Week 97 - Enclosure for the Tormach PCNC1100
::2014/12/09::
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The Birth Of A Tool. Part III. Damascus steel knife making (by John Neeman Tools)
The Birth Of A Tool. Part III. Damascus steel knife making (by John Neeman Tools)
::2012/12/24::
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Bushcraft Knife Making
Bushcraft Knife Making
::2011/10/28::
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Knifemaking. How to make a neck knife by Pearce Knives.
Knifemaking. How to make a neck knife by Pearce Knives.
::2014/03/31::
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Making a knife with only common tools - time-lapse
Making a knife with only common tools - time-lapse
::2013/04/21::
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Knifemaking Tuesdays Week 89 - Handle vacuum fixture
Knifemaking Tuesdays Week 89 - Handle vacuum fixture
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Knifemaking Tuesdays Week 92 - King engraving on clip
Knifemaking Tuesdays Week 92 - King engraving on clip
::2014/09/16::
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Making a Damascus Steel Chef
Making a Damascus Steel Chef's Knife
::2014/05/27::
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Knife Making Custom Hunting Bushcraft Camping Survival Knife Home Made Knives
Knife Making Custom Hunting Bushcraft Camping Survival Knife Home Made Knives
::2014/08/26::
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Blacksmithing Knifemaking - Dolphin Knife - Hand Forged Unique Railroad Spike Knife
Blacksmithing Knifemaking - Dolphin Knife - Hand Forged Unique Railroad Spike Knife
::2014/08/15::
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Knife Making Tutorial-  How to Hollow Grind a Knife
Knife Making Tutorial- How to Hollow Grind a Knife
::2012/06/27::
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Knifemaking Tips for Beginners: Common Mistakes
Knifemaking Tips for Beginners: Common Mistakes
::2013/08/25::
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Angle Grinder Jig for knife making
Angle Grinder Jig for knife making
::2014/08/13::
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KnifeMaking Tutorial 1 of 2
KnifeMaking Tutorial 1 of 2
::2011/04/20::
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Custom Knife Making hand sanding with Nick Wheeler
Custom Knife Making hand sanding with Nick Wheeler
::2014/06/17::
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Knife Making Tutorial - LEARN from my mistakes- Tips, Tricks, Sales
Knife Making Tutorial - LEARN from my mistakes- Tips, Tricks, Sales
::2012/07/16::
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Knifemaking Tuesdays Week 80 - Copper Inlay Awesomeness
Knifemaking Tuesdays Week 80 - Copper Inlay Awesomeness
::2013/12/19::
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Knife making - Scandi knife from Finland
Knife making - Scandi knife from Finland
::2014/03/27::
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Knife Making Tools Part 2: Belt Grinders
Knife Making Tools Part 2: Belt Grinders
::2013/01/03::
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knifemaking - making a knife from old file
knifemaking - making a knife from old file
::2011/08/28::
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38
Survival Knife Making
Survival Knife Making
::2014/08/06::
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Knifemaking Tuesdays Week 79 - Update and More Straightening Blades
Knifemaking Tuesdays Week 79 - Update and More Straightening Blades
::2013/12/11::
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40
Knifemaking Tuesdays Week 88 - Timascus Part 2 - finished knife!
Knifemaking Tuesdays Week 88 - Timascus Part 2 - finished knife!
::2014/08/12::
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Making damascus steel knife
Making damascus steel knife
::2014/02/22::
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Knifemaking Tuesdays Week 93 - Titanium surface grinding with the Tormach PSG
Knifemaking Tuesdays Week 93 - Titanium surface grinding with the Tormach PSG
::2014/09/24::
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Blacksmithing Knifemaking- Hand Forged Tiger Maple Tanto File Rasp Knife
Blacksmithing Knifemaking- Hand Forged Tiger Maple Tanto File Rasp Knife
::2014/09/06::
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Knifemaking Tuesdays Week 77 - Grinder Part 4 DONE!
Knifemaking Tuesdays Week 77 - Grinder Part 4 DONE!
::2013/10/26::
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45
Custom Knife Making Belt Grinder 72 Inch Homemade
Custom Knife Making Belt Grinder 72 Inch Homemade
::2013/11/23::
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46
Jason Knight on making Mosaic Damascus for a knife.
Jason Knight on making Mosaic Damascus for a knife.
::2013/06/30::
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47
Making a Homemade Custom Knife
Making a Homemade Custom Knife
::2013/09/14::
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48
Knifemaking Tuesdays Week 82 - sharpening and tumbling
Knifemaking Tuesdays Week 82 - sharpening and tumbling
::2014/01/21::
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49
Knifemaking Tuesdays Week 95 - Shorten pivot pins
Knifemaking Tuesdays Week 95 - Shorten pivot pins
::2014/10/29::
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50
Making a kitchen knife
Making a kitchen knife
::2014/03/07::
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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]

Main article: Blade steel

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]

Main article: Grind
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.

Heat treatment[edit]

Main article: Heat treatment

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 150-250 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 8000 grit finish.[citation needed]

Handle making process[edit]

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 1273673. PMID 7046256. 
  4. ^ Goddard, Wayne (2000). The Wonder of Knifemaking. Krause. pp. 107–120. ISBN 978-0-87341-798-3. 
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