The video argues that tube-drill marks on Old Kingdom Egyptian artifacts and at sites such as Abusir demonstrate advanced drilling technology. The evidence shows rotating tubes worked with abrasive grit to grind hard stone such as granite. Tube drills could core out the centers of stone vessels, and the video proposes pivot sockets for large doors as another use. On the Brooklyn Museum's two-ton sarcophagus lid, the cited holes measure 5.3 cm across and 24 cm long—about 2.1 inches wide and 9.4 inches long.
Video Argues Tube Drills Show Advanced Old Kingdom Technology
Key facts
- The video presents the marks as evidence of advanced drilling; the archaeological evidence shows rotating tubes used with abrasive material.
- Tube drills could remove a central core when hollowing stone vessels.
- Documented examples occur on artifacts and at Old Kingdom sites, including Abusir and the Brooklyn Museum sarcophagus.
- On the Brooklyn Museum's two-ton sarcophagus lid, the cited holes measure 5.3 cm across and 24 cm long—about 2.1 inches across and 9.4 inches long. The asserted 5-inch and 20–24-inch diameter ranges are unsupported.
- Abrasive grit cut the stone, so the drill did not simply "rip" through hard material.
- The video proposes large door-pivot sockets as another possible use, and drill sizes varied with the task.
Sources
Expedition Magazine | Ancient Egyptian Stone-Drilling - Penn Museumpenn.museum
The granite core published by Petrie was made by the ancient Egyptians using a tubular drill. Note the similarity of the concentric lines (arrow) found on the ...
Lost Ancient Technology Of Egypt: Curious Drill Holes In Stonehiddenincatours.com
A close up shot shows that you can see the groove made as the tube drill easily cut through the hard granite. Some engineers have stated that whatever tool did ...
Documentary! The mystery of the Ancient Egyptian Tube Drillsunchartedx.com
This is an investigation into the story and mystery of the enigmatic tube drills of Old Kingdom Egypt. A story that stretches across 150 years.
Hand drill (hieroglyph)en.wikipedia.org
The Hand drill is a hieroglyph, (and tool), used in ancient Egypt from the earliest dynasties. As a hieroglyph, it can also be used as a determinative for ...
Ancient Egyptian Stone Technology - Tube Drillingtheglobaleducationproject.org
A primitive version of tube drilling can even be done with a bamboo drill bit, a bow saw and sand. However, making a bit tough enough to drill holes in granite ...
5300-year-old 'bow drill' rewrites story of ancient Egyptian ...phys.org
A new study reveals that Egyptians were using a mechanically sophisticated drilling tool far earlier than previously suggested.
Egyptian Core Drill Holes In Stone: Evidence Of Machining ...hiddenincatours.com
The above photo shows you the marks left by the cutter as it penetrated this black granite located at Abusir. Each mark is a single rotation of the drill, ...
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