Sunday, April 30, 2006
The kera
The Kera.
The Kera is crushed delicately. Carbon content chooses 0.3%-1.5 % of the steel from that. This is said as the tamahagane. The best material of the katana is the tamahagane. The tamahagane is hit with a hammer until it is thickness 3mm. That is broken in the smaller piece. They are sorted out the hard part from the soft part. Soft steel is used in the center of the katana. This is said as the shingane. Hard and beautiful steel is used for the surface. This is said as the kawagane.
