#4741 3D Printing Sand and Mud Castles
#4741 3D Printing Sand and Mud Castles Nature-inspired 3D printing could improve large-scale renewable energy storage https://techxplore.com/news/2026-09-nature-3d-large-scale-renewable.html #4741 3D Printing Sand and Mud Castles 3D printing with natural, granular, and earthen slurries—such as beach sand, mud, clay, and silt—bridges the gap between large-scale digital fabrication, additive manufacturing, and natural building techniques. Scaling additive manufacturing to soils and sands depends on two distinct mechanical approaches: Direct Extrusion (Paste Deposition) and Powder-Bed / Selective Binder Jetting . 1. Primary Deposition Methodologies Parameter Direct Slurry Extrusion (Paste Deposition) Selective Binder Jetting / Liquid Droplet Material State Wet paste / cohesive mud slurry Dry sand bed / damp granular base Extrusion Mechanism Progressive cavity pump, auger screw, or ram extruder Piezoelectric / solenoid printhead or localized spray nozzle Binders / Stabilizers...