A method of manufacturing a body of a fluid control apparatus using additive manufacturing, the method including forming an inner wall having an outside surface and an inside surface, an area surrounding an inlet, an area surrounding an outlet, and an area surrounding a fluid flow path, wherein the inner wall provides a fluid boundary and connects the inlet and the outlet. The method further including forming a portion of the inner wall that receives a valve seat, forming a portion of the inner wall that receives a control stem and a control element, and forming a lattice structure by depositing a solidifiable material onto the inner wall in a predetermined pattern, wherein the lattice structure is three-dimensional and includes a plurality of connected lattice members.