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originally posted by: Timkel
a reply to: Harte
Watched the video, shows him drilling through soft stone with a bow drill and copper core. Look again at the granite cores and do you honestly believe that method would work and at the speed of cut that the Egyptians achieved. I am not talking alien technology here, I am simply saying that the Egyptians had a method of cutting stone that is beyond our comprehension.
originally posted by: Timkel
a reply to: Harte
[Inappropriate post removed by staff.]
Stocks was brought along to test his theories about how the cores were drilled. Inspired by a bow drill seen in an ancient Egyptian wall painting, Stocks designs a home-made bow drill. He wraps rope around a copper pipe that the Egyptians could have forged. Hopkins and Lehner then pull back and forth on the bow, which is weighted from above. The pipe spins in place, rubbing the sand, which etches a circle into the stone. With the assistance of the sand, the turning copper pipe succeeds in cutting a hole into the granite slab. With the aid of a bow drill and sand, the pipe has cut a circular hole into the stone.
originally posted by: Timkel
Aah, I thought this would attract the attention of a troll. Well I will attempt to penetrate that shell of ignorance. Electric motors!!, no I didn't say that but the drill core shows indisputable evidence of rapid progress through very hard stone. The spiral cutting line is a pressure,not percussion process and beyond today's capability.the remains of the core show that a very thin-walled tool was used. That is mind boggling!!.
originally posted by: Timkel
a reply to: howmuch4another
[Inappropriate post removed by staff]