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The article mentions engineer and expert machinist Christopher Dunn, author of Lost Technologies of Ancient Egypt: Advanced Engineering in the Temples of the Pharaohs. I have his book and some videos with Dunn, a fascinating character with some provocative ideas.

He definitely believes some sort of power equipment was sometimes used. He has done scale graphics of stone carvings such as the large Ramses statues and demonstrated that dividing the faces in half and folding the graphic over on itself the two sides matched perfectly such as we would do today but with computer controlled machinery.

Flinders Petrie recorded a stone he claimed had to have been 'grooved' with a saw of some kind

but as far as I know no followup was ever done.

Puma Punku in Peru has grooved stones, some with equally spaced holes drilled right through from inside the grooves. Best to forget all that.

http://en.wikipedia.org/wiki/Pumapunku

Power tools? Odd that there's no sign of ancient power generation, literally anywhere, apart from the Baghdad battery, and the metal power tools have not survived anywhere, not even in a picture on a tomb wall. No metal blades, not even worn out ones, either in ancient rubbish tips or in ancient art, have survived, anywhere. My favorite thing is how the power tools were powered by the Great Pyramid somehow ("Giza Power Plant") without any coherent explanation about A) how that actually worked or B) why can't anyone reproduce the system today, or C) how did the "power plant" Great Pyramid get built without power tools, or for that matter D) why is the oldest one at Giza more massive than all the other Giza pyramids put together? Dunn's just full of it.

At the 10th Geopolymer Camp in 2018, Prof. Joseph Davidovits presented during his annual keynote his last studies on the Tiwanaku / Pumapunku Megaliths. In November 2017, an international team (a geologist from Universidad San Pablo at Arequipa, Peru and a member of the Geopolymer Institute) went on the site to carry on a survey on these stones. After different analysis on thin sections and under the electronic microscope, Joseph Davidovits claims that he has found "organic matter in volcanic rock", which is, by nature, impossible.

Tiwanaku / Pumapunku Megaliths are Artificial Geopolymers | Geopolymer Institute | Published on March 3, 2019