john graesser enscribed:

I seem to recall someone mentioning in the past that glass can be drilled if
it was kept in a bath of kerosene, and drilled while submerged.
thanks, John.

Having the sheet of glass submerged while drilling dampens out the shock
waves and helps to prevent shattering.
However, I don't see what the special attraction would be for using
Kerosene. Plain old water works just fine. Just make sure you use the
correct type of drill bit and a nice slow cutting speed.
Kerosene is not significantly more viscous than water, so if you want to
really damp things out I'd use a heavy grade lube oil, maybe a 20-50
grade motor oil. Far less flammable, as well.

73 Alf NU8I
Scottsdale AZ DM43an