What are the challenges in achieving uniform oxidation on large-scale aluminum animal sculptures?

Achieving uniform oxidation on large-scale aluminum animal sculptures presents several challenges. Aluminum naturally forms a protective oxide layer, but creating an even, aesthetically pleasing patina requires careful control. Factors like surface preparation, environmental conditions, and chemical treatments play critical roles. Large sculptures often exhibit uneven oxidation due to variations in exposure to air, moisture, and temperature. Additionally, the sculpture's complex shapes can lead to inconsistent chemical reactions. Artists must balance artistic intent with technical precision, often employing specialized techniques like forced oxidation or sealants to achieve uniformity while preserving the sculpture's integrity.