This is the production process of stone mould for an Early Bronze Age Axe (2000 BC). The material is a soft sandstone (biocalcarenite) , very easy to work, carve and polish, as well as very resistant to high temperatures (above 1000°C).
You can find the video of the bronze casting here
   • Experimental Archaeology: casting an ...  

"Il Tre di Spade" facebook page
https://www.facebook.com/bronzecraftm...
Scientific papers:

https://www.academia.edu/2387945/Ston...

https://www.academia.edu/9657412/Expe...

https://www.academia.edu/2388061/Trac...

https://www.academia.edu/2387959/Obse...