It was a decade or so since I did that drilling of fused glass but I am pretty sure it was a regular drill bit.
We might have used a diamond crusted reamer to get the scratch in the surface to get the hole started.
I remember pressing too hard as well as getting distracted ( it was an evening class at a bead store ) when I broke the bits and they were also probably the cheapest things available to boot.
These days I have seen much better quality encrusted bits whether they are diamond or carbide crumbs is anyones guess.
__________________
The Zombie Apocalypse is Upon Us.
|