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Cake day: April 12th, 2024

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  • Theoretically, all candles, practically, candles where the wax is held in some kind of container are more prone to this. Wax is technically a combustible liquid (it will only burn in its liquid state, and what actually burns, are its vapours). Due to the relatively high flash point of wax, it normally only burns with the aid of a wick. If you stack enough candles too close to each other, the wax can potentially heat up beyond its flash point, though, and start burning on its entire surface. Foreign objects falling into the molten wax, acting as an additional wick, can also increase the heat output of a candle’s flame, heating the wax beyond its flash point.

    This phenomenon typically only happens with candles that are enclosed in some sort of container where the entire wax can and will melt. With stick type candles, the excess molten wax will usually run off, away from the flame heating it, and when all the wax is gone, the flame will go out. Unless you put them into some kind of relatively small container, where the wax can accumulate and the hat can’t get away. But you’d need some awfully small container with an awful lot of stick candles in order to achieve that.