Jimmy DiResta was sitting on a plane, looking at his clasped hands, when he wondered if he could possibly create a joint that worked on a similar principle of interleaving fingers clasping two pieces of material together. The result of that inspiration is this steel stool connected together by CNC-cut finger joints.

Image: YouTube Read the rest

https://boingboing.net/2020/04/07/jimmy-diresta-builds-a-stool-w.html