Wine bottle Tesla coils

If I do make a small coil using a wine bottle, I need to cut about 1.5" off
the neck of the bottle so the small toroid won't be too high.  Does anyone
know how to cut bottles?  I remember reading that you can take a string
soaked in lighter fluid, tie it around the bottle, light it and let it burn
for 10 seconds or so and then dunk in it a bucket of water.  Has anyone tried
this - or got any better ideas?

Ed Sonderman