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Erik's avatar

This is incredible, Ken! I will say that there are 5-axis CNC machines with articulated cutting heads that should be able to do this. These are used for tasks like porting cylinder heads and the cutting head can pivot by up to 60 degrees inside the chamber. Having said that, this is a specialized, modern computer controlled tool and will leave tool marks even if microscopic. So what I would like to know about these jars are “are there tool marks inside?” If there are no tool marks I’m thinking something like a water jet, laser, or maybe something ultrasonic was used to do the cutting. Extremely high tech stuff!

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Chris Hambleton's avatar

Hi Ken! I'm a new subscriber and recently found your work! Have you heard of Joseph Davidovits and geopolymers? He's written several interesting books on the subject, and in one of them he describes how the Egyptians made stone vases/jars with geopolymer cements: https://www.geopolymer.org/library/archaeological-papers/c-making-cements-with-plant-extracts/

Much of his research involves how the Egyptians made the pyramids of Giza and there are YouTube videos of him making large blocks using the same materials they had access to.

Thanks again for all your great work!

Chris Hambleton

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