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A "Super High Speed Steel" Not suitable for knives.



A stainless steel, most likely a variation of 440C. Carbon-0.5%, Chromium-14.0%, Vanadium-0.15%, Molybdenum-0.35%


Tactical Knife

Any knife designed for or used in a combat or tactical situation. The first human who used a flint knife to cut or stab another person was the inventor of the Tactical Knife, not some silly modern knifemaker who may or may not have coined the term.



That part of the blade that is either fastened between scales to make the handle or goes through a hole in the handle material. Also the part of a pocket knife blade that is between the handles. Learn More here.


Tapered Tang

A method of grinding a full tang to taper to the butt of the knife, improving balance as well as appearance. Brought to modern knife making by R. W. Loveless.


Thong Hole

A hole at the butt of a knife handle intended for a wrist thong or lanyard.


Thumbolt® Sheath

The very safest sheath for fixed blade knives, invented by Blackie Collins; the patent and trademark are owned by A. G. Russell .



A material that can be both hard and tough, widely used to armor jet-fighters. About 1/3 lighter than steel it is very useful for knife parts. It will not hold an edge so is not useful as a blade.



The fighting ax of the American Indian, began as a club with wooden or stone head became a hatchet with the advent of iron heads from the Europeans.


Traditional Pocket Knives

Many think this applies only to slipjoint knives, I feel that this term should include any style of folding knife that was made before 1960.



A two bladed knife, most commonly with both blades at the same end, the blades often a drop point and a long spey blade. The exception to the blades being at the same end is the Muskrat Trapper which always has a blade at each end.



Used in small quantities in several steels used in handmade knives. Helps to produce a fine, dense grain structure. Expressed as W.


Turkish Clip Blade

A very distinctive blade shape that has a very long clip, even more than a California Clip; also has a curved edge.