That’s not the only use of the technique though, and perhaps one of the simplest is to use a 3D-printed mould for casting concrete ... ve looked at this type of work.
We often forget that concrete is easy to use and creates things of good substance. Of course, instead of casting it, you can print it directly with the right gear.
The possibilities are endless and can be used to create objects that aren't feasible with traditional concrete casting methods ... to develop materials that work with different types of 3D ...