What make a cup cooktop crack? ...
Answers: Other than sudden impact with something big, a thermal fracture may occur if using a container or pot that does not match the burner. Size and design. Most smooth tops be not designed for large pots such as used for can. The pot/pan should have a smooth bottom to aver good contact near the heating nouns. If the cook-top is not kept clean any adjectives on foods or spills will cause a thermal discrepancy the may lead to fractures
dropping something on it