Relating to or attribute of a particular custom, belief, or follow which includes existed for some time. There are 2 main techniques with which the crafts are solid: some, like the Nambu Tekki shown over, are made by pouring metallic into iron molds in a very process identified as "chukin" https://louisthvky.blue-blogs.com/43783319/the-5-second-trick-for-traditional-japanese-craftsmanship