cobalt?

[skwairpeg.livejournal.com]

Hi again,

I'm trying to find a place that carries diamond drill bits, so that I can drill holes in wine bottles and make incense burners! So far my search has turned up nothing but cobalt - the last guy I talked to said he didn't know if that would crack a wine bottle or not.

I've never done this before, but I think it would be really fun and I could get creative with decorating the bottles... if anyone has done this before, can you tell me how you went about it??