For centuries before the invention of screws and fasteners, Japanese craftsmen used complex, interlocking joints to connect pieces of wood for structures and beams, helping to create a uniquely Japanese wood aesthetic that can still be seen in the works of modern masters like Shigeru Ban.
Up until recent times, however, these techniques were often the carefully guarded secrets of family carpentry guilds and unavailable for public knowledge. Even as the joints began to be documented in books and magazines, their 2-dimensional depictions remained difficult to visualize and not found in any one comprehensive source.
That is, until a few years ago, when a young Japanese man working in automobile marketing began compiling all the wood joinery books he could get his hands on and using them to creating his own 3-dimensional, animated illustrations of their contents.
四方枘継ぎ Shihou-hozo-tsugi http://pic.twitter.com/vEbvfEek98
— The Joinery (@TheJoinery_jp) October 5, 2016
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Using the mechanical design software Fusion360 and employing self-taught woodworking skills, he began creating animations of the joinery and posting them to a twitter account.
The account now features 80 posts of various joinery techniques, some self-locking, some best used for turning-corners, some for creating beams. The complex cuts in the wood maximize the amount of surface area shared by the connecting wood elements, helping to create a snug fit held together by friction.
四枚鎌継ぎ Yonmai-kama-tsugi http://pic.twitter.com/1LApi4GlQu
— The Joinery (@TheJoinery_jp) October 1, 2016
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In modern times, the complex cuts necessary to create these joints have simply become too expensive to warrant to their use in standard architecture. But with the rise of CNC milling and 3D-printing fabrication techniques, it is not difficult to imagine a future where these techniques are not only affordable, but also the most reliable.
通し違い枘差し枘鼻栓仕口 Toshi-chigai-hozo-sashi-hanasen-shikuchi http://pic.twitter.com/1ToumLNXMM
— The Joinery (@TheJoinery_jp) September 30, 2016
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隅二方鎌継ぎ Sumi-nihou-kama-tsugi http://pic.twitter.com/Xc8Vik1W0t
— The Joinery (@TheJoinery_jp) September 17, 2016
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貝の口継ぎ Kai-no-kuchi-tsugi http://pic.twitter.com/dj9N8ZftqS
— The Joinery (@TheJoinery_jp) September 13, 2016
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半いすか竿車知継ぎ Han-isuka-sao-shachi-tsugi http://pic.twitter.com/AaGICBbcVp
— The Joinery (@TheJoinery_jp) September 5, 2016
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渡り顎二重枘仕口 Watari-ago-niju-hozo-shikuchi http://pic.twitter.com/4U3hrvFMGt
— The Joinery (@TheJoinery_jp) September 1, 2016
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箱相欠き車知栓仕口 Hako-aikaki-shachi-sen-shikuchi http://pic.twitter.com/FKRVB8uDVt
— The Joinery (@TheJoinery_jp) July 6, 2016
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箱車知栓継ぎ Hako-shachisen-tsugi http://pic.twitter.com/NOhU3ktifp
— The Joinery (@TheJoinery_jp) June 3, 2016
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箱隠し継ぎ Hako-kakushi-tsugi http://pic.twitter.com/1pXO6v1RhE
— The Joinery (@TheJoinery_jp) May 31, 2016
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捻れ組み継ぎ Nejire-kumi-tsugi http://pic.twitter.com/nyrJCko6Gb
— The Joinery (@TheJoinery_jp) May 21, 2016
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河合継手 Kawai-tsugite http://pic.twitter.com/WQwxeZ7t4M
— The Joinery (@TheJoinery_jp) May 17, 2016
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篠差し蟻仕口 Shinozashi-ari-shikuchi http://pic.twitter.com/3AcAt5WU6B
— The Joinery (@TheJoinery_jp) May 4, 2016
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三方組仕口 Sampo-gumi-shikuchi http://pic.twitter.com/OdgpaTBvcs
— The Joinery (@TheJoinery_jp) May 3, 2016
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大阪城追手門控柱継手 Osaka-jo-otemon-hikae-bashira-tsugite http://pic.twitter.com/R6SN8y2fg0
— The Joinery (@TheJoinery_jp) May 10, 2016
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See the full list of animated joinery techniques at @TheJoinery_jp.
News via Spoon & Tamago.