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A folding switchblade. A switchblade (also known as switch knife, automatic knife, pushbutton knife, ejector knife, flick knife, gravity knife, flick blade, or spring knife) is a pocketknife with a sliding or pivoting blade contained in the handle which is extended automatically by a spring when a button, lever, or switch on the handle or bolster is activated.
Once the blade is cool and the mud is scraped off, the blade has designs and grooves cut into it. One of the most important markings on the sword is performed here: the file markings. These are cut into the tang (nakago), or the hilt section of the blade, during shaping, where they will be covered by a tsuka or hilt later. The tang is never ...
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.
The point of normalizing is to remove the stresses which may have built up within the body of the blade while it was being forged. During the forging process, the blade might be heated and cooled differentially creating stress, some parts might be hammered more than others, some areas hammered enough to harden them. If these stresses are left ...
A variety of blade materials can be used to make the blade of a knife or other simple edged hand tool or weapon, such as a sickle, hatchet, or sword. The most common blade materials are carbon steel, stainless steel, tool steel, and alloy steel. Less common materials in blades include cobalt and titanium alloys, ceramic, obsidian, and plastic.
In addition to stamped tangs, many early knives had trademark etching on the blade. The company's best-known mark was a tic-tac-toe pattern, and the words “Sharp Tested Temper”, were used beginning in 1911.
Another New York Yankees tradition is falling by the wayside this baseball season. After last week relaxing the team's longstanding policy on facial hair, the Yankees will not be playing Frank ...
The AeroVironment Switchblade is a miniature loitering munition designed by AeroVironment and used by several branches of the United States military.Small enough to fit in a backpack, the Switchblade launches from a tube, flies to the target area, and crashes into its target while detonating its explosive warhead.