D
Deleted member 221031
Perfectly possible,
"The granite core published by Petrie was made by the ancient Egyptians using a tubular drill."
Expedition Magazine | Ancient Egyptian Stone-Drilling
<p>More than most technical procedures in the ancient world, drilling of hard stone such as quartz and granite has evoked […]</p>www.penn.museum
See my video above showing the sandstone coring. 50mm in days!
Are you going to cling to that video ?