Share Email Facebook Twitter LinkedIn To Convert Contiguous Surfaces That Enclose a Volume to a 3D Solid Object Click Modeling tab > Surface panel > Surface Sculpt. Select surfaces that enclose a watertight volume (that is, there must be no gaps between the surfaces). A solid object is created. Related Concepts About Converting Surfaces and Meshes to 3D Solids Related Tasks To Convert Objects With Thickness to Extruded SolidsTo Convert One or More Surfaces to SolidsTo Convert a Mesh Object to a 3D Solid