I so wish we had a base on the moon -- and we had robots creating buildings as we speak...
I would LOVE to go to the moon...
Just off the top of my head a fact popped into my mind that the moon is 2160 miles in diameter ... why on Earth (pun intended) would I remember that?
Back in the 90's NASA was already working on a robotic system for building construction. They considered it more like a cake frosting than a 3D printer (which really had not hit the market yet).
Back in the early 90's, the projector company that I worked for sent out the CAD file for the case of our newest projector. The supplier used the stereo lithography process you mentioned; a UV curing resin and a UV laser to draw the parts layer by layer. We were told that it was the largest machine of its type on the West Coast.
Somewhere in the process, a decimal point was moved and the first part we got back for our 20" long projector was 2" long. It was very cute but I don't think any king of projector could have been crammed into that space until Ti's recent Pico Projector.