Evaluating a sex doll’s build quality involves a systematic assessment of materials, assembly, and functional integrity. Start with the skin: check tactile realism, uniformity, and absence of visible seams or imperfections. Look for consistent coloration, subtle texturing, and edge finishing around joints. Internal skeletons should demonstrate robust articulation with minimal creak or wobble; test range of motion, stability, and the ease of posing without visible stress on joints. Inspect the orifices for clean finishes and secure sealing to prevent leaks or odors during use. The head and neck should align smoothly with the torso, moving without excessive resistance or looseness. Inspect the hands and feet for uniform weight distribution, secure attachment, and natural contouring. Mechanical components—motors, actuators, and sensors—should be well-protected from dust and moisture, with accessible service points for maintenance. Electrical systems require thoughtful routing to avoid pinching wires or overheating. Battery compartments should be secured and labeled with safety instructions. Pay attention to finishing details: paint adhesion, silicone integrity, and durable coatings that resist wear. Finally, test software reliability, responsiveness, and calibration routines that confirm synchronized motion and sensory feedback. A holistic appraisal combines tactile inspection with functional trials to gauge long-term durability and reliability.