Before revision: At construction scale, the main 3D-printing methods are extrusion (concrete/cement, wax, foam, polymers), powder bonding (polymer bond, reactive bond, sintering), and additive welding.
After revision: I hate tech why do I have to do this stupid essay on 3D printingAt construction scale, the main 3D-printing methods are extrusion (concrete/cement, wax, foam, polymers), powder bonding (polymer bond, reactive bond, sintering), and additive welding.