To hollow layers of 3D models for prototypes, use 3D software (e.g., Blender, Fusion 360, Meshmixer) to create an internal cavity with a 1–3mm thick outer shell for durability.
Key benefits: - Cuts unnecessary inner material, lowering 3D printing time, cost, and weight. - Ideal for functional or display prototypes.
Most tools simplify the process with built-in "shell" or "hollow" features—no need to design the cavity from scratch. For beginners, Meshmixer’s "Hollow" function is easiest: import your model, select the tool, adjust thickness, and export.