interesting. i was not aware of this. however, it remains to be demonstrated that these individual techniques can be applied to create an actual obelisk with bas relief, actual petri core, or actual sacarphagus demonstrating the accuracy and details achieved by the ancient egyptians, unless someone am not aware of in modern times has actually done it...
One of the favorites of Hatshepsut was the obelisk. That form was around before her, but the Egyptians really went to town when she was on the throne. Her name is on those, which gives the time of origin. Others have different dates and have different names on 'em. At least one of Hatshepsut's is in Rome -- the ancient Romans really liked obelisks, and in an engineering feat of their own, moved a number of them to Rome by sea without cutting them and restacking the pieces.