What lost-wax casting adaptations are necessary for producing hollow cast iron animal sculptures?

Producing hollow cast iron animal sculptures using the lost-wax casting method requires specific adaptations to ensure structural integrity and artistic detail. Key adjustments include designing a two-part mold to create the hollow interior, using a ceramic shell or investment mold to withstand iron's high melting point, and incorporating vents to prevent gas buildup. The wax model must be carefully sculpted with thin, even walls to allow for uniform metal flow. Additionally, sprues and gates must be strategically placed to facilitate molten iron distribution. Post-casting, meticulous finishing work is needed to refine details and remove any imperfections, resulting in a lightweight yet durable sculpture. These adaptations make lost-wax casting a versatile technique for intricate hollow metal artworks.