kellem wrote:
Found out later she had large chilli pot on back burner.
I'm certain this directed a lot of heat towards glass top.....big pots up front.
X2!
Thermal shock (extreme fast high temperature changes).
Same thing as sitting a very hot Pyrex glass baking dish from the oven on a room temperature metal stove top.. You can do it, but eventually the Pyrex vessel will fail from thermal shock and when it fails it will be a spectacular event!
My Mom lost a few Pyrex baking dishes that way.
I treat ANY glassware with care concerning very quick temperature change extremes, even Corelle dishes (which are nothing more than dishes made from Pyrex and are amazingly hearty) are not exempt from Thermal shock (DW has broken a few Corelle dishes that way).