A study from The Ohio State University, published in Acta Astronautica and reported February 27, 2026, demonstrated laser 3D printing with LHS-1, a simulant designed to reproduce lunar-highland regolith. Researchers melted the synthetic soil layer by layer to produce small, heat-resistant objects, showing potential for durable, nontoxic habitats and tools supporting NASA’s Artemis goal of establishing a sustained lunar presence by the end of the 2020s.[1]
Performance depended strongly on the printing substrate and process conditions. LHS-1 adhered poorly to stainless steel and glass but bonded effectively to alumina-silicate ceramic, whose crystal formation with the regolith improved thermal stability and mechanical strength. Oxygen concentration, laser power, and print speed also altered structural stability, demonstrating that lunar manufacturing systems must be engineered around tightly controlled material and process parameters.[1]
The Ark should track replication of this result using actual lunar regolith and vacuum-compatible systems, with priority testing for radiation shielding, pressure-retaining structures, thermal cycling, micrometeoroid resistance, and long-duration degradation. Research plans should include alumina-silicate ceramic interfaces, closed-loop process control for oxygen and laser parameters, and qualification thresholds before committing the technique to permanent archives or crew-critical infrastructure.