Katana Blazing Sun Oroshigane Kobuse Blade Jojaku Koshirae 炎陽 Saya made from blackened and polished

made from blackened and polished white copper (白銅)

The blade is shaped with an imposing Ō-kissaki (大切先)

Blade Name: TangGu Traditionally Forged Sanmai Blade (三枚造)

using Kobuse-zukuri (甲伏造) construction in which a hardened outer layer encases a softer core

Katana Blazing Sun Oroshigane Kobuse Blade Jojaku Koshirae 炎陽 Saya made from blackened and polishedFolded Oroshigane Steel Shinken () Blazing Sun Katana: TangGu () Oroshigane () Kobuse Blade () + TangGu () Hantachi Jojaku Koshirae () The Hantachi style koshirae () combines classical design with functional strength. The blade is forged from Oroshigane () steel in Kobuse zukuri () construction, with a hard steel jacket and softer core. The surface shows Ayasugi hada () grain and a straight suguha hamon () created through clay tempering (). The saya