I can't find the video, but I recall watching this on TV when I was younger. They found an ancient abandoned quarry site in Egypt (same one?) and brought in someone to test cutting and drilling granite with copper tools and it worked. The trick is using sand in between the copper and the granite.
The thing that made Ancient Egypt so special and so historically significant isn't that they had amazing technology. It's that they built a coherent culture, religion, language and government. The vast construction projects they undertook were achievable because they could field massive armies of laborers and keep them provisioned for years. They built these massive structures by dint of having lots of food and secure borders.
It actually didn't work. They were barely able to scar the surface with a jagged janky cut after many hard hours of hard work, and they weren't even attacking the hardest types of stone we see things created from. It's just not possible these tools were used to create the amazingly accurate pieces you find in Egypt, fashioned in some of the hardest materials we know.
He cuts it pretty sharp here. And then shows a technique for smoothing imperfections. Also a lot of the stones weren't actually cut perfectly. Only the ones that were on visible surfaces. The technique was probably slow and laborious, but the Egyptians had huge numbers of workers and they spent years or decades on projects.
I'm not sure what the counterargument even is. If the Sphinx was built using super ancient metal tools, where are they? And how did Egyptians make granite carvings all over their empire over the span of millenia? They obviously knew how. We know it's possible. We just don't know for sure how they specifically did it and maybe never will.
It was only a few years ago that we solved the mystery of Roman concrete.
Utterly spurious. The toolmarks don't match the experiment and therefore it was another civilization? Just stupid. They may have used a different type of grist for their drills. They may have had a technique for smoothing them after the hole was cut. They may have just been so practiced in their art that they were just better at it than anyone who tries to replicate it today by guessing. We have unequivocal evidence that cutting and drilling granite with available material was totally possible. We don't know and probably never will know for certain how exactly they worked. But it's 100% plausible they did it themselves with technology and resources available at the time that matches all the correlated evidence. There are carved granite and schist artifacts in Egypt spanning thousands of years during which they kept lots of written and artistic records and interacted with dozens of regional cultures all of whom are well-attested. Accusing the scientific mainstream of being to stuck in their orthodoxy to accept an alternate theory is rich coming from someone who believes a wildly implausible theory with nearly religious fervor and rejects all the physical evidence in front of his face in favor of blind faith. Bring some proof beyond pure conjecture and then maybe we'll be convinced. Go read about pre-Clovis people in the Americas. The orthodoxy that had stood for decades was upended pretty quickly when new evidence was uncovered.
> It's just not possible these tools were used to create the amazingly accurate pieces you find in Egypt, fashioned in some of the hardest materials we know.
The pyramids are almost entirely made of limestone. Limestone is around a 3.5 on the mohs hardness scale.
The scale goes up to 10 (diamond).
Granite (king's chamber, sarcophaguses, plugs) is around 6, 6.5.
Guess what's above that? Quartz. AKA your common desert sand.
Very impressive, but the Egyptians supposedly didn't have the ability to form steel; also the holes were not chiseled, they were drilled leaving spiral striations that witness an incredible feed-rate.
Yes, it's interesting isn't it, how everyone is debunking eachother, and that hasn't changed much from the days of Petrie. Doesn't seem like the "science", after all these decades, is solid and settled yet whatever timeline you believe.
Here's some still photos and captions: https://www.pbs.org/wgbh/nova/lostempires/obelisk/cutting.ht...
The thing that made Ancient Egypt so special and so historically significant isn't that they had amazing technology. It's that they built a coherent culture, religion, language and government. The vast construction projects they undertook were achievable because they could field massive armies of laborers and keep them provisioned for years. They built these massive structures by dint of having lots of food and secure borders.