A pocket of explosive gas, such as methane, is entombed in the wax along the wick. When the pocket is breached, the flame ignites the gas, which promptly consumes all surrounding oxygen to snuff the flame. A series of such pockets along the length of the candle allow for reuse.
-- the porpoise, Jun 18 2014

[+] I think we're getting old: it took 9 frickin' tries to get this ?
-- FlyingToaster, Jun 18 2014


Are you sure you want a gas? It seems that could diffuse out over time, disabling this important safety feature. But I'm sure someone here could recommend a suitable solid alternative. [+]
-- scad mientist, Jun 18 2014



random, halfbakery