Biplane 2.0

This set of 3D-printable puzzle components 🧩, when upgraded through assembly, becomes an enhanced biplane ✈️. The first image reveals all improved parts, allowing precise restoration of reinforced wing ribs, movable flaps, and modular engine nacelles. The composite aerodynamic optimization and detachable functional modules blend classic design with modern engineering concepts, while stimulating your innovative engineering thinking during construction ✨.