Metal sculptures, while durable, often develop structural weak points over time due to environmental factors, material fatigue, or design flaws. The most common vulnerabilities include welded joints, thin or unsupported sections, stress points, and areas prone to rust or corrosion.

Welded joints are frequent failure points due to thermal stress or improper welding techniques. Reinforcement involves re-welding with higher-grade materials or adding supportive brackets. Thin sections may bend or crack under weight; these can be strengthened with internal reinforcement rods or external plating. Stress points, often found at dynamic angles or load-bearing areas, benefit from additional bracing or gussets. Rust-prone areas require protective coatings like galvanization or regular maintenance to prevent deterioration.

For large outdoor sculptures, anchoring systems and periodic inspections are critical to prevent collapse. Advanced techniques like carbon fiber wrapping or epoxy injections are increasingly used for invisible repairs. By addressing these weak points proactively, artists and conservators can significantly extend the lifespan of metal artworks while preserving their aesthetic integrity.