Dumb Russians Trying To Drill A Hole in Granite With Copper

And they succeeded.

With very simple things like wooden blocks and stems and using Corundum as abrasive wich is available in Egypt.

Explanation: Granite is 7 on the Mohs Scale of hardness, while Corundum is 9.

https://simple.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness

https://www.metmuseum.org/blogs/now-at-the-met/2015/ancient-egyptian-technology

There goes the Ancient Alien Technology Theory.