With the concrete house in an hour, the idea is that the printing step takes 1 hour. The entire process would be performed in a massive temporary box, and an in

With the concrete house in an hour, the idea is that the printing step takes 1 hour. The entire process would be performed in a massive temporary box, and an inert filler material would be placed at the same time as the concrete to fill voids and eliminate slumping. This would allow a second floor to be "printed" over the room voids below. The printing step would be accomplished in 1 hour. The curing step could happen over a week if need be.