humanoid robot head 3d model

Create a clean, futuristic humanoid robot head designed specifically as a 3D-printable prototype for a final-year engineering project. The head should have a compact, symmetrical humanoid shape with a smooth but slightly mechanical appearance. Include two large expressive eye openings, a central front area for an optional camera, and a clearly defined movable lower jaw/mouth section. The lower jaw must be a separate movable part with a visible mechanical separation line around the mouth. Leave sufficient internal hollow space inside the head for a small servo motor, microphone, speaker, wiring, and electronics. Design the head as a practical engineering prototype rather than a highly detailed character model. Use simple surfaces, rounded edges, modular construction, and flat or stable surfaces where appropriate so the model can be 3D printed and later modified in CAD software. Include: - Removable lower jaw - Internal hollow cavity - Space for a small servo near the jaw - Space for