I've been asked a question which I thought I would relay into here, as I have no clue of the answer...
My father is trying to convert a couple of jade stones into earrings for my mother. He has the stones which have a flat side for attaching to mountings, and he has the mountings. The mountings have a flat plate with a small bump which is supposed to be glued into a small hole in the jade, which he needs to drill. His first attempt was a 1mm HSS (I think) drill bit, which would bearly even mark the jade. Next he bought a 1mm TCT bit, and after about half an hour of drilling (on and off), it's drilled a 0.5mm deep hole and the bit end is now polished off.
So any suggestions on how to drill such a hole, and would some type of lubricant help?
Also, any comments on glue to use (I think he's intending to use Aruldite).