A 3D katana is a three-dimensional digital reproduction of a traditional Japanese katana. This type of katana is made using advanced technologies such as 3D modeling and 3D printing to create an exact copy of the original weapon. The 3D katana is often used for the practice of kenjutsu and iaido, two forms of Japanese martial arts that emphasize the use of the katana. With its sharp blade and leather-wrapped handle, the 3D katana offers a realistic practice experience for martial artists, weapon collectors, and Japanese culture enthusiasts.