seated man 3d model

single human male figure, seated on a train dining car seat, HO scale 1:87, full body, correct proportions, sitting upright with back against the seat, hips fully on seat, knees bent at 90 degrees, both feet flat on the floor, arms resting naturally on table, one hand holding fork, one hand holding knife, eating pose, short hair, slightly overweight with small belly, middle-aged man (45-55), neutral facial expression, casual clothing (shirt and trousers), no extreme thin parts, thickened fingers and limbs for 3D printing, simplified but realistic details, solid watertight manifold mesh, no holes, no missing body parts, no cut model, no floating elements, centered model, optimized for STL export