Have you ever had a glass candle jar break from allowing too much wax to melt?
Candles in glass jars always include a warning about not allowing the bottom ½ inch of wax to melt since it might cause the jar to break. However, I have talked to a couple friends who have burned hundreds of candles all the way down without incident. So I’m wondering, how common is it for the glass to break? Is it virtually unheard of but they have to include the warning for the sake of liability? Also, what kind of breaking are we talking about? A minor crack? An explosion? Something in between?