Artists employ a variety of sophisticated techniques to give new bronze sculptures an authentic aged or weathered appearance. The most common method involves chemical patination, where acids and heat are applied to the bronze surface to accelerate oxidation, creating natural-looking green, blue, or brown patinas. Professionals often use ferric nitrate for red-brown tones or cupric nitrate for green-blue effects, carefully controlling application with brushes or sprayers.

For more dramatic weathering, artists may combine mechanical distressing techniques like sandblasting, wire brushing, or controlled hammering to simulate decades of wear. Some apply multiple layers of wax or lacquer between patina applications to create depth and variation. Modern sculptors also use electrolysis or burial techniques, where sculptures are partially submerged in specific soil mixtures to encourage natural corrosion patterns.

The most convincing results come from combining these methods - starting with chemical treatments for base coloration, adding manual texturing for wear patterns, and finishing with wax or sealants to protect the final appearance. Master artisans often study genuine antique bronzes to replicate the unique ways different surfaces age over time, from smooth areas that develop even patinas to crevices that collect darker oxidation. These techniques allow contemporary sculptures to instantly convey historical weight and visual storytelling.