Very cool work, but one thing that comes to mind is that this approach is still 30% "evaporant, surfactant, and plasticizer solvents, [and] polylactic-co-glycolic acid" by volume[1]. Good for simple tools and fixes that need to be rebuilt, but a long ways off from being self sustainable. Needing to ship 30% of the materials with you means this probably wont be usable for habitat creation or anything long term. I'm curious to see how low we can get that percentage down while still maintaining structural integrity.
[1] https://www.nature.com/articles/srep44931