Young Brunette Girl Reveals Her Full Natural Breasts While Posing With Japanese Katana Sword

After the blade is forged it is then sent to be polished. The polishing takes between one and three weeks. The polisher uses finer and finer grains of polishing stones until the blade has a mirror finish in a process called glazing. This makes the blade extremely sharp and reduces drag, making it easier to cut with. The blade curvature also adds to the cutting power.
Usage in martial arts
Katana were used by samurai in practicing several martial arts and modern martial artists still use a variety of katana. Martial arts in which training with katana is used include battōjutsu, iaidō, kenjutsu, shinkendo, kendo.