Since I’ve been playing with flush setting small stones, I got to think about doing something sort of similar with some quite small and thin rosecut cabs I have. For this I think I would need a bur with a flat end, maybe like the one in the link? Drilling holes for faceted stones is pretty straightforward but something wider and shallower, I’m not sure. I don’t know if anyone even does this. Any advice? Thank you.
Flat head inverted cone sintered carving bur (inlandcraft.com)