Purely History on Instagram: "Long before modern 3D printing became mainstream, the idea was already taking shape in the 1930s. Inventors and builders began experimenting with automated machines that could lay concrete in layers, a process strikingly similar to how today’s 3D construction printers operate. One well-known example is R. Buckminster Fuller’s Dymaxion house, though other innovators also developed mechanized systems designed to extrude concrete in controlled patterns. These early exp

Purely History on Instagram: "At the 44th Academy Awards in 1972, Charlie Chaplin returned to the United States after two decades of exile to accept an Honorary Award. When he walked on stage, the audience gave him an emotional standing ovation that lasted about 12 minutes, the longest in Oscar history."