Take a look at the first 3D-printed construction technology using ordinary concrete with large aggregates, invented by William E. Urschel in 1939, preceding modern construction printing by six decades — The first building he printed still stands today as a functioning structure | Poal: Say what you want.

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Take a look at the first 3D-printed construction technology using ordinary concrete with large aggregates, invented by William E. Urschel in 1939, preceding modern construction printing by six decades — The first building he printed still stands today as a functioning structure (9gag.com)

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[–] • 2 pts

That is pretty damn cool. It's a "low tech" but very functional system.

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