Why does aluminum melt wax first?

Aluminum melts wax first due to its relatively high thermal conductivity, which allows it to transfer heat quickly. When aluminum is heated, it can reach temperatures that exceed the melting point of wax (approximately 62-65°C or 144-149°F) before the aluminum itself begins to melt. This rapid heat transfer causes the wax to melt first, making it easier to release any embedded objects or create impressions in molds.