Procrastinating again… Anyway, this is cool. A series of mechanical devices (either 3D printed, or made of plastic/extruded) which have no hinges and typically a monopiece. Great mechanics and great engineering. I did not even knew such stuff existed.
BTW, the whole channel of this guy is full of great stuff. Again and again I am amazed why I never heard of such amazing things before. There’s so much interesting stuff out there…