EPTOn November 20 2019 09:05 AxiomBlurr wrote:
If you are further interested, please investigate the tubular drill marks and cores described by Flinders Petrie.
From Petrie:
"Egyptian Core: UC 16036 (core number 7) A cylindrical core of granite grooved round and round by a graving point, the grooves being continuous and forming a spiral, within one part a single groove that may be traced five rotations round the core."
A single threaded line around a drill core that per revolution cuts deeper then any drill that would be capable of creating the same diameter of core we have today. What can cut granite? Corundum and Diamond, perhaps the ancient Egyptians had these gems? Yet to set these gems into a mount that could withstand the stupendous pressure required to produce
UC 16036 is something else entirely.
Today we use high rpm but low cut depth per revolution drills to achieve the same cores. Many of the Egyptian cores were cut using low rpm but high cut depth per revolution. Petrie observed the cutting point(s?) on the drill ate deeper into the quartz crystal of the rose granite compared to the cuts in the other minerals in the rose granite.
Controversial to say the least.
If you are further interested, please investigate the tubular drill marks and cores described by Flinders Petrie.
From Petrie:
"Egyptian Core: UC 16036 (core number 7) A cylindrical core of granite grooved round and round by a graving point, the grooves being continuous and forming a spiral, within one part a single groove that may be traced five rotations round the core."
A single threaded line around a drill core that per revolution cuts deeper then any drill that would be capable of creating the same diameter of core we have today. What can cut granite? Corundum and Diamond, perhaps the ancient Egyptians had these gems? Yet to set these gems into a mount that could withstand the stupendous pressure required to produce
UC 16036 is something else entirely.
Today we use high rpm but low cut depth per revolution drills to achieve the same cores. Many of the Egyptian cores were cut using low rpm but high cut depth per revolution. Petrie observed the cutting point(s?) on the drill ate deeper into the quartz crystal of the rose granite compared to the cuts in the other minerals in the rose granite.
Controversial to say the least.
Well I mean it’s interesting but any time people post skeptical stuff and questions you seem to just post additional tangential information, so to query your claims requires even more viewing and reading time in an exponential fashion.
