Creating bronze sculptures with either a matte or glossy finish involves distinct techniques that transform the metal's appearance. Artists achieve these effects primarily through the patina process, a chemical treatment applied to the bronze surface.

For a matte finish, artists typically use acids or ferric nitrate to create an oxidized layer, resulting in a subdued, non-reflective surface. This technique emphasizes texture and depth, often preferred for classical or rustic styles. The process involves heating the bronze and applying multiple layers of patina, then sealing it with wax or lacquer for protection.

Glossy finishes require polishing the bronze to a high shine before applying clear coatings. Some artists use electrolysis to create a mirror-like surface, while others achieve gloss through meticulous hand-polishing. The final step often involves applying a transparent lacquer or resin to maintain the reflective quality.

The choice between matte and glossy depends on artistic intent. Matte finishes absorb light, highlighting form and detail, while glossy surfaces reflect light, creating dynamic visual effects. Contemporary artists sometimes combine both finishes in a single piece for dramatic contrast.

Advanced techniques like torch patination allow for precise control over the finish. Environmental factors like humidity and temperature also play a role in the final outcome, making each bronze sculpture truly unique.