Folded Steel: This blade had been folded eleven times, creating 2048 layers. This traditional sword forging method involves repeatedly heating, hammering and folding the swords steel. The effect of this work evens out and homogenises the carbon content, making for a stronger, more flexible blade.
Clay Tempered: The blade has been clay tempered in order to harden the cutting edge while still allowing the spine to remain flexible. The tempering process imbues the blade with a distinctive Hamon (blade pattern).