This looks like a terrible waste of vertical space. Not to condone everyone living in apt buildings, but even just a second or third story seems untennable with

This looks like a terrible waste of vertical space. Not to condone everyone living in apt buildings, but even just a second or third story seems untennable with just this tech. So you probably can't build a real home worth living in with this, but it is interesting tech nonetheless - perhaps for large granaries, depots, or other use cases where maybe efficiency is not as much of a concern. E.g. I could see usage for underground living spaces which just want to put up some custom walls which are not plaster, or perhaps for orbital space vessels.