Quote Originally Posted by Kaorte View Post
If you poured cold water over a piece of glass that was 100º+, yes it might crack.

If you set your thermostat to 85, there is no way the glass will reach 107.
You don't need cold water just hot glass and room temp water. And yes I did over state the part on it being 17* differnce but it will make the glass a lot warmer. I am trying to find a posted made by another user that was posted a few days back in regards to how hot the glass can get.