Archaeologists Revealed the Lost Machine That Cut Egypt’s Granite, and It Changes History

in this video, we talk about the mysterious drilling and sawing technology used to shape ancient Egypt’s hardest stones—and the traces these tools left behind. From a spiral-grooved granite core in the Petrie Museum to saw marks on Khufu’s sarcophagus and drill residue containing corundum, we examine the evidence, the theories, and what experiments reveal about how the tools may have worked. We also discussed the weighted drill hieroglyph, the possibility of copper or bronze tube drills powered by abrasive grit, and why no complete drilling machine has ever been found. The evidence doesn’t prove impossible or lost technology, but it raises a compelling question: how much did ancient Egyptian craftsmen know, and why did their machines disappear?
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