Play: 「日本刀製作技術」 (Nihontō seisaku gijutsu): the technique of the Japanese sword, an educational video with Gassan Sadatoshi
「日本刀製作技術」 (Nihontō seisaku gijutsu): the technique of the Japanese sword, an educational video with Gassan Sadatoshi · 奈良県無形文化遺産映像アーカイブ (Nara-ken Mukei Bunka Isan Eizō Ākaibu)
30:38 · 17 February 2026
The audiovisual archive of the intangible heritage of Nara Prefecture on the technique of his father, Gassan Sadatoshi, at the dōjō where Sadanobu forges.
Play: 日本刀の作り方 月山流 (Nihontō no tsukurikata, Gassan-ryū) How to make katana Japanese sword 字幕付 (jimakutsuki; how a sword is made in the Gassan school, with subtitles)
日本刀の作り方 月山流 (Nihontō no tsukurikata, Gassan-ryū) How to make katana Japanese sword 字幕付 (jimakutsuki; how a sword is made in the Gassan school, with subtitles) · JAPAN STUDY 日本研究 (Nihon kenkyū)
13:19 · 7 April 2020
The forging process at the Gassan dōjō. Who forges in the video is not on record.
Play: 【Samurai swordsmith】Gassan memorial hall・Gassan japanese sword training dojo 月山記念 月山日本刀鍛錬道場 (Gassan kinen, Gassan Nihontō Tanren Dōjō)
【Samurai swordsmith】Gassan memorial hall・Gassan japanese sword training dojo 月山記念 月山日本刀鍛錬道場 (Gassan kinen, Gassan Nihontō Tanren Dōjō) · HYPER ZIPANGU CHANNEL
31:46 · 5 November 2022
A tour of the family museum and dōjō in Sakurai. It is not on record that he appears.