Which constraint limited the casting size of early Mesopotamian bronze tools and weapons?

💡 Explanation

Uneven mold cooling caused stress fractures because slower ingot cooling led to differential solidification and weakness along grain boundaries that were undetectable and amplified upon use. This brittle failure risk limited the mass of cast bronze, rather than oxidation, scarcity, or temperatures; the metallurgy was robust enough for these factors compared to modern analysis.

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