Researchers print interlocking blocks from lunar dust simulant without binders

University of Arkansas researchers demonstrated that simulated lunar regolith can be printed into interlocking construction blocks without added binders, Phys.org reported. Their study, published in npj Advanced Manufacturing, used a relatively low-power light source to fuse the powder directly. The team printed blocks a few centimeters wide in cross and H shapes that fit together. Eliminating binders could reduce material transported from Earth for lunar construction. The blocks are more porous and structurally weaker than versions printed with binders. They can support themselves, but the researchers cautioned against using them to support other loads yet; performance in microgravity and vacuum also needs investigation.