In hard surface 3D modeling, a mesh is a connected network of vertices, edges, and faces that forms the geometric structure of rigid objects (like machinery, tools, or architecture).
It acts as the "wireframe" foundation: Faces (usually triangles or quads) create the solid surface, while vertices and edges let artists tweak shape or add details (e.g., extruding a face to make a gear tooth). For instance, a metal pipe starts with a cylindrical mesh, then refining edges adds thickness.
New to this? Try modifying basic meshes (cubes, cylinders) in Blender—moving vertices or extruding faces teaches how meshes define hard-edged, precise forms.