They use stone disk with sand like particles from various materials to grind the jade bit by bit. It's a slow and tedious process. As for right now, such technique has been lost. The illustration of the techniques can be found from a book titled Chinese Technology in the Seventeenth Century by Yinxing Song, which I believe this guy is it as a reference for this presentation.
This is fabulous! Thank you so much! :)
Out with it!
Holes like those with Congs would be impossible to drill especially by using bamboos and conundrums.
Your really funny..... You think bamboo would cut rock???? No....holes were drilled by tools..not bamboo.
It would indeed be impossible to drill with conundrums. With a mineral like corundum, however....
They use stone disk with sand like particles from various materials to grind the jade bit by bit. It's a slow and tedious process. As for right now, such technique has been lost. The illustration of the techniques can be found from a book titled Chinese Technology in the Seventeenth Century by Yinxing Song, which I believe this guy is it as a reference for this presentation.
@@jj987987987 just like the holes drilled and shaped granite in egypt right?
@@dgafbrapman688 so much stuff, in front of our noses...the best trick of the devil..make the people believe he does not exist
Pity I can not hear her talking two low
Turn on subtitles by hitting CC on the video.
Nephrite is NOT brittle
Most of the ancient are nephrite
He thinks they cut it with leather!! 😂