We use Heiss steel which is superior in the durability of the sharpness.
We polish in sword blade of 85mm from the point of a sword again and are chisel for print for result, seniors available for a long time.
Pattern opens if we take off clasp, and length of the point of a sword adjustment is possible, too.
The point of a sword: Heiss steel
Pattern: Cherry tree
This industrial art object can purchase even Japan Traditional Crafts Aoyama Square.