Sunnyday Technologies has released an open-source concrete 3D printer called M3-CRETE that can be built with standard NEMA motors and generative design: The project aims to bring pallet-scale concrete printing to any workshop without proprietary hardware, enabling affordable construction printing. https://all3dp.com/4/new-diy-concrete-3d-printer-from-off-the-shelf-parts/ #3Dprint #3Dprinting #Consumer