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A 4,500-year-old copper tool from Egypt is now the world’s oldest known rotary drill, revealing advanced ancient metallurgy and trade.
A copper tool from a 1927 excavation in Badari, Egypt, has been identified as the world’s oldest rotary drill, dating to the late 4th millennium BCE—over 2,000 years earlier than previously known examples.
Researchers from Newcastle University and the Academy of Fine Arts in Vienna found evidence of rotary motion, including fine striations and a curved working end, indicating it was used as a bow drill.
The tool’s complex alloy, containing arsenic, nickel, lead, and silver, suggests advanced metallurgy and possible trade connections.
The discovery, published in *The Earliest Metal Drill of Naqada IID Dating*, redefines early Egyptian craftsmanship and underscores the value of re-examining museum collections.
Una herramienta de cobre de 4.500 años de antigüedad de Egipto es ahora el taladro rotativo más antiguo conocido del mundo, revelando la avanzada metalurgia y el comercio antiguos.