Inspired by AI SpaceFactory’s ‘Marsha’ project, this method has advantages over pure additive manufacturing alone by enabling heavier, more stable structures. By using ‘dirt’ as the primary material, this is a useful method of building large structures using only local materials.

Regolith pillar was created by 3D printing a lightweight mold using polyvinyl alcohol (PVA) filament, and filling it with a mixture of sand & resin. The PVA, being water soluble, was melted away after being placed in a basin of water for 76 hours. After melting it away, one can see the beauty and innate strength of the sand once it has solidified. Resin can be replaced with a different binding agent, and experiments are ongoing to find the appropriate mixtures.