black cylinder 3d model

Geometry & Dimensions: Primary Shape: A perfect solid cylinder with a diameter-to-height ratio of approximately 1.2:1 (e.g., 12mm diameter, 10mm height). Top Surface: Completely flat circular face. The top outer edge must have a subtle 0.5mm radius fillet (bevel) for a smooth finish. Bottom Face: Recessed and hollowed out, featuring a central mounting boss. Internal Mounting Socket (Crucial): Type: "D-shaped" blind bore (D-shaft socket). Details: A central circular hole with one flat vertical side to prevent rotation. The hole must not penetrate the top surface (stop 1.5mm before the top). Support Structure: 4 thin radial reinforcement ribs connecting the central D-bore housing to the outer cylinder wall, positioned at 90-degree intervals. Material & Texture: Material: Matte black injection-molded plastic. Surface: Non-reflective, slight micro-texture, no parting lines or logos. Color: Hex #1A1A1A (Deep Matte Black). Output Requirements: