Xact Metal seems to have hit the sweet spot.
build volume
Pop Up 3D Prints Of The Future
Researchers have been experimenting with techniques to 3D print objects that can be unfolded into their full size after printing.
Does 3D Print Build Volume Really Matter?
One of the first question I always hear from 3D printing newbies is “How Big Can I Print?” But that isn’t really a good question.