Hackaday (unofficial) July 30, 2021 3:00am 3D Printed Material Might Replace Kevlar #3dprinterhacks #science #3dprinting #bulletproof #kelvincell #kevlar #tetrakaidecahedron #hackaday posted by pod_feeder_v2 3D Printed Material Might Replace Kevlar Prior to 1970, bulletproof vests were pretty iffy, with a history extending as far as the 1500s when there were attempts to make metal armor that was bulletproof. By the 20th century there was ball…