Some of the key elements which elevate Kasho World Classics beyond
the reach of the competition include:
In close cooperation with the Hitachi corporation, Kasho utilize
carefully researched stainless steel alloys which result in blades which
are superior in wear resistance, hardness, and dimensional stability.
Kasho has installed its own state-of-the-art metal-forming and
heat-treating equipment. After hot-forging the steel to the desired
shape, the blade is heat-treated in a spaceage atmospheric chamber. The
blade is then triple-tempered to its optimum working hardness, using an
isothermal process.
The
basic purpose of heat-treating is to radically change the molecular
structure of the steel, while retaining as many of the original
characteristics of the alloy as possible.
Standard heat-treatment methods alter these desirable characteristics
through carbon loss and absorption of impurities in the metal.
Because Kasho uses advanced heat-treating technology, the purity of
the stainless steel is safe-guarded, and the resultant crystal-line
structure of Kasho blades is second to none.
Kasho has developed a computerized grinding machine with laser
sensors to guide the blade through the hollow grinding process - thus
assuring high-precision convex edges.
With a state-of-the-art precision stainless alloy blade and handle in
hand, a Kasho "SHUJIN" joins them together for comfort,
balance, and control. Every surface is hand polished to a flawless
mirror finish. Top and bottom blades are selected and, then, hand-worked
until they become a perfect matching set. They are meticulously
hand-honed, assembly and set by the "SHUJIN" in a laborious,
time-consuming process and finished to his own, personal high standards.
Taken together, these elements represent the highest expression of
technology and craftsmanship.