History Facts & Stories on Instagram: "In 1939, inventor William E. Urschel created the world’s first 3 D printed building behind a small warehouse in Valparaiso, Indiana. The experimental structure was produced using a custom built mechanical system that continuously extruded layers of concrete to form walls directly on site, reducing the need for traditional formwork and manual labor. The following year he would file a series of patents for a Wall Building Machine, describing a method for auto

Adam Savage's Tested on Instagram: "#AdamSavage meets Riley Kolbow (aka @worksbydesign ⁠), the designer and inventor of the transforming chess pieces that went viral! Riley visits the cave to show Adam how his mechanical pawns work and blows our minds with how he engineered, iterated, and manufactured these pieces. Full video on YouTube.com/Tested. #chess #3dprint #chessboard #chesspiece"