The bending structure is designed with a hollow connection in the middle, which serves as a critical stress‑bearing area of the model. When bending, apply gentle, controlled force along the model’s symmetrical fold lines, and gradually increase the bending angle to avoid sudden, excessive force or over‑bending at the connection point. This prevents the model from fracturing at the hollow joint, thereby ensuring both the safety of the bending process and the structural integrity of the final print.