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> …And that it wouldn’t be possible without plastics. No other type of material could ever achieve such durability, flexibility and precision; and that’s not even considering costs – no other materials _period_.

Mokulock may not be identical or cost the same, but it's basically the same product without plastic. They don't snap together or come apart as easily, but I like the idea of it. I'd love to see LEGO done in metal too.

Is there a lego inspired solution to industrial design, specifically mechanical mechanisms? I have had a product in mind that is quite intricate with several possible configurations. I personally haven't excercised my 3d muscles as much over the years and I find cad with 3d printing to be not as intuitive as snapping parts together.

> no other materials _period_

I wonder if you could do it with horn. I'm not sure how you'd make the hollow bits of blocks. But it has the right sort of properties. Relatedly, see:

https://plastiquarian.com/?page_id=14337