In a message dated 96-09-12 00:43:54 EDT, you write: << Question regarding bottle caps? Modern bottles are made of plastic. Anyone know the breakdown voltage of the modern bottle? Can it be used in the same way, giving us a lot less chance of harm if it does go bang! It can also give the variable capacitance if it works. >> What about 5 gal water jugs for large caps, would they work? Steve