As discussed, Homer set up a small autofactory at each find—just enough printers and roamers to produce a few cargo drones at a time. As they were produced, the cargo drones would start moving materials to the L4 and L5 points in the Earth/Moon system. Larger autofactories were already being set up at the two Lagrange points, initially to produce Bobs and drones, and then to bootstrap up to the industrial-scale equipment necessary to build a full-sized colony ship.