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| ... "White oak is used extensively in Japanese martial arts for some weapons, such as the bokken and jo. It is valued for its density, strength, resiliency and relatively low chance of splintering if broken by impact, relative to the substantially cheaper red oak. Urban legend attributes Japanese white oak ("Kashi") as being the wood of choice but, by law, no white oak is harvested in Japan. Virtually all white oak used in the manufacture of weapons in Japan is imported from the northwestern United States". |
