I expect this to show up as Home decoration in the near future, eh? Super cool.
I know there's companies like http://www.desamanera.com/en/3d-printing.aspx that can 3d print stone (they use quarry waste dust like marble and bond it using a chemical reaction. Others use photosensitive polymers). They can do big things and they say it has no height limit, but 15m sounds pretty big for one print. 🙂
Thanks for sharing！The sculpture testing phase used 1:1 polyfoam digital engraving, finally used 1:1 marble digital carving, and then made a manual combination and made a detail carving and finishing.