Cubify

You convert raw materials into a perfect cube of the same material. 

Choose raw materials you can see within range. You can fabricate a Large or smaller cube of homogenous substance, density, and consistency, of the maximum size for the available material. If you are working with metal, stone, or another mineral substance, the fabricated object can be no larger than Medium.

Creatures or magic items can't be created or transmuted by this spell.