3D printing has some issues in a vacuum. Normal plastic will outgas and any voids can literally blow a hole in the filament. If you bring the right equipment, y

3D printing has some issues in a vacuum. Normal plastic will outgas and any voids can literally blow a hole in the filament. If you bring the right equipment, you can make lunar concrete with processed lunar rocks as the cement and the dust as aggregate. You could build sound structures out of this with inflatable liners so you can actually live in there. Gravity is 1/6th so the buildings don't have to be as strong as they do here on earth. However, you do need to keep the concrete warm which makes things harder.