Yes, that seems to be the standard approach - print with liquid. I wonder, tho, why it would not be equally possible to “print” with bricks as well as liquid. And, extending the concept, why “printing” with lumber is not also practical. It would entail cutting boards to the required length and glueing them into place. In the latter case especially, you would be using carpentry tools - saw, possibly hammer and nail - operating robotically as the “print head.”I am arguing for automation of much more conventional construction.
Actually they could break down wood into filament like plastic and build it that way.