The best way to build a 3D mesh model depends on your project (simple props vs. detailed characters) and skill, but a common effective workflow is starting with a primitive shape (cube, sphere) and refining via extrusion, subdivision, or retopology.
This uses basic shapes as a foundation—modify them by pulling faces (extrusion), smoothing edges (beveling), or adding detail (subdivision), then clean up messy geometry with retopology if the mesh needs animation or 3D printing compatibility.
Typical applications: - Simple objects (furniture, tools): Primitive + extrusion/beveling for quick details. - Organic models (characters, creatures): Subdivision to smooth shapes, then retopology for clean topology. - Functional parts (3D printing): Prioritize manifold geometry (no holes) for printability.
For beginners, start with Blender—it has free, user-friendly tools for primitives, subdivision, and retopology to practice this workflow without cost.