Quote Originally Posted by takagari View Post
i never said i scould or wasnt. Its something i'm looking at experimenting with. and if I put it on a GFI i'm sure its perfectly safe.

i dont see why it wouldnt heat the water? and if its kept at a lower temp it wouldnt beed enough head to crack the glass...

explain why you think this? maybe if the water was ice, and i applied it at full heat.
The amount of heat it takes to heat water is very high, and having the flexwatt on a low setting would hardly heat the glass. Have you ever felt a water heater? They get HOT! Some ive heard, which I think have a glass case, get so hot that if the water level gets lower than it, the heater itself will explode.