TL;DR: Laser/Regolith 3D Printing is a main entry in the 外星矿物知识引擎 database.
Using laser or concentrated solar energy to sinter regolith layer-by-layer into structural elements
Input Material
Bulk lunar regolith
Output
3D-printed structures (walls, shelters, infrastructure)
Efficiency
Slow but autonomous; no additives needed
Space Viability
Good - demonstrated by ICON and ESA; requires significant power