In 1939, William E. Urschel created a technology very similar to the one used for today’s 3D printed building. He did it behind a small warehouse in Valparaiso, Indiana and called it “Wall Building” machine
[full video: ]
Urschel Wall Building Machine
William Urschel’s demonstration of his "Wall Building" machine. Filmed in Valparaiso, Indiana in the late 1930’s.
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