I had a weird idea related to this about 3D “shaping” massive structures in outer space. So, say you go and mine an asteroid, then put a bunch of metal into a g

I had a weird idea related to this about 3D “shaping” massive structures in outer space. So, say you go and mine an asteroid, then put a bunch of metal into a giant “box” for lack of a better word. Then say you could tap into a large energy source from a star. Could you emit energy waves into this box that causes the metal to form itself into a certain shape? I’m thinking of those videos where they put grains of sand on a surface and vibrate it at different frequencies to produce varying shapes. With the right interference patterns, could you 3D form a spaceship hull inside the giant box full of metal floating in space?