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Knifemaking-Damascus steel knife
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Knifemaking - How to make a knife bevel
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Knifemaking - a knife from old bearing
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How to Choose Steel for Knife Making
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How to Make a Knife - Bushcraft Knife Making,1095 Steel Similar to a Condor Bushlore, Soup Can Forge
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Knifemaking - knife from a wood saw
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Knife Making with Wood and Brass Handle
Knife Making with Wood and Brass Handle
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Making a custom knife for an Infantryman
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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
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Knifemaking - A small knife is made
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Survival Knife Making
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Making a Damascus Steel Chef's Knife
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Knife Making Tutorial - LEARN from my mistakes- Tips, Tricks, Sales
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Traditional Knife Making - Forging a Shear Steel Tanto Blade...full process
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Bushcraft Knife Making
Bushcraft Knife Making
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Knife Making Tutorial- How to FLAT GRIND A Knife (30 min Tutorial)
Knife Making Tutorial- How to FLAT GRIND A Knife (30 min Tutorial)
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Jason Knight on making Mosaic Damascus for a knife.
Jason Knight on making Mosaic Damascus for a knife.
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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)
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Making a custom knife in M390 Steel and Carbon Fiber by Bulgarian knife maker - Silverman
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Knifemaking. How to make a neck knife by Pearce Knives.
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KnifeMaking Tutorial 1 of 2
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Knifemaking Tuesdays Week 80 - Copper Inlay Awesomeness
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Kunai throwing knife making
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Knife Making Tutorial- How to Hollow Grind a Knife
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Custom Knife Making hand sanding with Nick Wheeler
Custom Knife Making hand sanding with Nick Wheeler
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How to: Knife making and Knife making supplies. Making my first knife with mostly hand tools Pt 2
How to: Knife making and Knife making supplies. Making my first knife with mostly hand tools Pt 2
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knifemaking - making a knife from old file
knifemaking - making a knife from old file
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Knifemaking: Making the most of a small workshop
Knifemaking: Making the most of a small workshop
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Custom Knife Making Belt Grinder 72 Inch Homemade
Custom Knife Making Belt Grinder 72 Inch Homemade
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Knifemaking Tuesdays Week 26 - New Tormach CNC mill!!!!!!!!!!!!!!!!
Knifemaking Tuesdays Week 26 - New Tormach CNC mill!!!!!!!!!!!!!!!!
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Knife Making Tutorial- How to Make A Bowie Knife
Knife Making Tutorial- How to Make A Bowie Knife
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Knife Making
Knife Making
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Knife making - Scandi knife from Finland
Knife making - Scandi knife from Finland
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Bushcraft Knife Making How to make Handmade Knives Tutorial and Heat Treat Steel
Bushcraft Knife Making How to make Handmade Knives Tutorial and Heat Treat Steel
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Knifemaking Tuesdays Week 45 - Tor handles and blades
Knifemaking Tuesdays Week 45 - Tor handles and blades
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Knifemaking Tuesdays Week 82 - sharpening and tumbling
Knifemaking Tuesdays Week 82 - sharpening and tumbling
::2014/01/21::
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Making a Celtic Knife with Trollsky
Making a Celtic Knife with Trollsky
::2014/01/16::
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Knifemaking Tuesdays Week 89 - Handle vacuum fixture
Knifemaking Tuesdays Week 89 - Handle vacuum fixture
::2014/08/21::
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Knifemaking - Jak (teoretycznie) zrobić nóż?
Knifemaking - Jak (teoretycznie) zrobić nóż?
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Knife Making Tutorial- How to Make Multiple Handmade Knife Blanks
Knife Making Tutorial- How to Make Multiple Handmade Knife Blanks
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Knifemaking Tuesdays Week 52 - Vacuum Fixture and G10 inlays
Knifemaking Tuesdays Week 52 - Vacuum Fixture and G10 inlays
::2012/12/25::
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44
Knife Making Tutorial-  LAST-DITCH Knife
Knife Making Tutorial- LAST-DITCH Knife
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Knife Making a Bushcraft Neck Knife pt.1
Knife Making a Bushcraft Neck Knife pt.1
::2013/03/24::
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46
Knifemaking Tuesdays Week 92 - King engraving on clip
Knifemaking Tuesdays Week 92 - King engraving on clip
::2014/09/16::
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47
Knife making - Making a knife from file
Knife making - Making a knife from file
::2014/08/16::
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48
The Forging of a Hunting Knife in Tosa, Japan - 2013-3-7
The Forging of a Hunting Knife in Tosa, Japan - 2013-3-7
::2013/03/10::
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49
Knifemaking Tuesdays Week 85 - Wood inlays
Knifemaking Tuesdays Week 85 - Wood inlays
::2014/03/05::
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Knife Making- The Super Squad Knife
Knife Making- The Super Squad Knife
::2012/08/03::
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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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