This seems like a great way to build structures on the Moon. Imagine if we landed robots on the Moon to gather up moon dust into piles, and then satellites orb

This seems like a great way to build structures on the Moon. Imagine if we landed robots on the Moon to gather up moon dust into piles, and then satellites orbiting the moon could capture sunlight and direct that energy in the form of laser beams pointed at the moon dust. The robots would periodically brush away the excess dust, or add more to the pile. This idea might sound far fetched, but back in 2005 some guy actually sintered moon dust in a microwave oven. ( http://science.nasa.gov/science-news/science-at-nasa/2005/09nov_lawnmower/ http://science.nasa.gov/science-news/science-at-nasa/2005/09... ) This, combined with the op's article form a good proof of concept for 3D printed lunar homes.