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Making a Clay Crucible for Smelting — The Vessel That Holds Molten Metal
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26. Mayo 2026NO
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Making a Clay Crucible for Smelting — The Vessel That Holds Molten Metal

The clay crucible is the most essential tool in early metallurgy — a hand-formed vessel of refractory clay and grog that can withstand the 1,100 °C temperatures needed to melt copper and bronze. Without it, smelting is impossible.

This blueprint follows the Bronze Age method of mixing local clay with crushed pottery (grog) to create a thermal-shock-resistant vessel. The grog opens the clay body, allowing steam to escape during firing instead of shattering the crucible. The thick walls and tapered form channel heat inward while the pouring lip allows controlled transfer of molten metal into moulds.

Every bronze tool, weapon, and ornament of the ancient world began inside a vessel like this one.

Katamtaman
6-8 hours (plus drying and firing)

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CC0 Pampublikong Domain

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