This DVD condenses the entire process of a swordsmith creating a Japanese sword from iron sand into approximately 70 minutes. With explanations and commentary from the swordsmith himself, even beginners can easily understand the process of Japanese sword making. The moment copper is produced from iron sand is also included. It covers tatara iron making, preliminary forging, shaping with fire, clay application, quenching, and an explanation of the finished sword. My son was interested in the "Nichirin Swords" from Demon Slayer and studied by watching this DVD. LOL.