While working with a local stonemason we’ve encountered a problem with sculpting our stone. All of the different layers and textures that make our stone unique and beautiful are also what is causing trouble for us.
When coring the stone, as the drill bit encounters soft stone it spins quickly to wear away the surface but once it encounters a different layer or a hard embedded stone, the bit will suddenly slow down, driving a lot of force onto that spot.
The result is that, in our initial tests, large chips have come off of the stone, rendering it unsuitable for our project. The stonemasons are currently experimenting with other methods of working with this delicate material. We hope to have good news to share with you soon!