A person who performs cupellation, the process of refining precious metals using cupels.
Agent noun formed from 'cupel' plus '-er,' denoting one who performs the action. The role was a specialized craft in medieval and ancient metalworking.
Cupelers were among the first precision chemists—they needed steady hands, exact timing, and deep knowledge of how metals behave at extreme temperatures, making them among the most skilled craftspeople in ancient economies.
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