What are the challenges in maintaining consistent wall thickness in sand-cast aluminum animal sculptures?

Maintaining consistent wall thickness in sand-cast aluminum animal sculptures presents several challenges. First, the complexity of animal shapes often leads to uneven sand packing, causing variations in wall thickness. Second, aluminum's rapid cooling can result in shrinkage and distortion, further complicating uniformity. Additionally, the manual nature of sand casting introduces human error, such as inconsistent mold compaction. To address these issues, precise pattern design, controlled cooling rates, and skilled craftsmanship are essential. Overcoming these challenges ensures durable, high-quality sculptures with even structural integrity.