丸太を捻じ裂く：回転する鉄芯が木の年輪を割く瞬間
Published October 9, 2026
This video has 63.9K views and 115 likes, ranking #8,564,345 globally among tracked YouTube videos by view count.
At a glance
Views
63,992
Likes
115
Comments
0
Performance vs. channel
Outlier score
Engagement rate
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About
回転が生む、木を裂くねじれの力 何世紀も前から、人々は木を割るために、楔や槌だけでなく、回転やねじれを利用する道具を考案してきた。木は繊維の方向に沿って割れやすいが、逆にねじれを与えると、内部の応力が一気に解放され、まっすぐに裂ける。この方法は、硬い広葉樹や節の多い丸太でも、刃を何度も打ち込む手間を省く。回転する鉄芯は、木の中心をとらえ、年輪を外へ押し広げる。 鉄芯と年輪が描く、割れの線 ・丸太の断面をよく見て、中心のずれや節の位置を確認する。 ・鉄芯の先を木の中心に当て、回転を加えながら少しずつ押し込む。 ・木が割れ始める瞬間、繊維が白く裂け、細かな音が響く。 ・割れが進んだら回転を止め、手で広げて形を整える。 ・一度に深く…
- Published
- October 9, 2026
- Made for kids
- No
More features coming
We're working on new analytics and tools. Stay tuned.
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