Oh, hell yeah. Self-assembling space megastructures are MY JAM!  🛸,(reply>), Same,(reply>), I'm your party bud.,(reply>), 😂 it makes my engine going too,(reply>), @Chino R I agree with you, as of to how could David Sherrill be so close minded and I agree with the fact that it would most likely be easier to do in the environment of space because you could manufacture the product in the environment of space using cold welding technique which would probably make the manufacturing of the product itself be insanely efficient. Cold welding is what happens when two pieces of the same metal touch in space, they will permanently bond together as there's nothing separating like-atoms in a vacuum,(reply>), @Chino R Are you serious? This is and always will be science fiction. Go play some Warhammer 30k if you want to see space cathedrals.