How to cut stones with sound
https://youtu.be/BsqOLCXYznE
(heads up this is loud turn down your volume)
Website (and description):
https://creation-arts.com/2017/02/how-to-cut-stones-with-sound/
Ever wondered how the ancient people of Egypt ‘drilled’ perfect round holes in granite, and precision carved hieroglyphs into stone?
Check out this guy, using only sound vibration and copper tools to cut stone.