Switzerland

In Switzerland, a whole room has been printed in sand.

The room is just over three meters tall and looks like a grotto. A computer calculated the pattern on its walls, with more than 260 million tiny surfaces. It’s all sand.

A 3D printer laid down the sand in layers thinner than a millimeter, gluing the grains together wherever a wall was meant to be. The sand around it stayed loose and was removed afterwards.

Printing took a month. The room came out in 64 pieces, eleven tonnes of sandstone in all, and was put together in a single day.