Thursday, December 01, 2005

The Furuyama Hayabusa Katana Sword

The Furuyama Hayabusa Katana is Hand Forged from high carbon steel. It is fully functional and designed to withstand the rigors of cutting practice.

The sword is differentially tempered in the traditional manner dating from 700 A.D. involving the use of an insulating clay coating, and has a visible hamon (Temper Line). This is further accentuated by an etched hamon. The effect of differential tempering is that the cutting edge is tempered to be harder than the back edge. Allowing the spine to be more flexible while giving the cutting edge the strength it needs.

The habaki (blade collar) extends 1" past the tsuba (guard) and is made of copper.

A Bo-Hi (fuller) runs the length of the blade on both sides. Which makes the blade lighter while not affecting the strength. The hamon of the Kissaki Boshi (tip) is ko-maru (small circle) style.

Closeup of the Tsuba (guard). The tsuka (handle) is made of wood wrapped in a brown suede leather tsuka-ito (handle wrap) over black samé (ray skin). Two mekugi (bamboo pegs) are used to anchor the blade in the handle.

The saya (scabbard) is made of wood covered with a black rough-textured finish.

Blade Length: 28"
Handle Length: 11.5"
Overall Length: 30.5"
Blade Thickness: "
Blade width = ", narrowing to " at the point
Overall Mass: 2.50 pounds; 1.12 kilos "


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