普通では作れない日本刀
それを、刀に適さない砂鉄を、色々考えて、
集め鎌倉の高校生が日本刀作りました
非常に多くの時間と、根気と分析が必要です。
素晴らしい学生たち。

560
Japanese swords that can not be made normally
It, the iron sand that is not suitable for sword, and various ideas,
Collected and a high school student in Kamakura made a Japanese sword
Very much time, perseverance and analysis are necessary.
Wonderful students.

鎌倉高校科学研究会 「鎌倉砂鉄」精製し短刀完成
Kamakura High School Science Research Group “Kamakura sand iron” refined and completed a short sword
https://www.townnews.co.jp/0602/2017/12/15/411709.html