Which limitation was encountered when creating large bronze statues via lost-wax casting?

💡 Explanation

Thermal expansion mismatch between bronze and investment materials during cooling often led to mold cracking because **differential volumetric contraction** exceeded the investment's tensile strength; therefore, Mesopotamian artisans needed sectioned molds rather than single, continuous casts, rather than achieving monolithic forms.

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• Within early bronze cannons, which risk increased due to repeated firing?
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