The restoration of metal sculptures requires vastly different approaches depending on whether the piece is antique or contemporary. For antique sculptures, conservators prioritize preserving historical integrity by stabilizing corrosion, retaining original patinas, and using reversible techniques. Traditional methods like mechanical cleaning and wax coatings are favored over harsh chemicals that could damage centuries-old surfaces.

Contemporary metal sculptures, however, often involve working with modern alloys and industrial finishes. Restorers may employ welding, powder coating, or even 3D printing to replace damaged sections while maintaining the artist's original vision. The focus shifts toward structural integrity and matching modern surface treatments rather than preserving aging processes.

Key differences emerge in material compatibility - antique bronzes require copper-compatible repairs while stainless steel sculptures demand different metallurgical approaches. Environmental considerations also vary, with antique pieces needing climate-controlled displays that contemporary works may not require. Both demand specialized expertise, but the philosophical approach differs fundamentally between conservation and reconstruction.