
Here's an interesting idea for a trick candle, the candle releases a spring to reveal candy - Link.
Trick candles
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Burning wax and flying projectiles -- What could possibly go wrong?
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I thought the same thing but if you read the microscopic print the "candles" are actually paper, not that flaming paper is actually any better but they refer to shiny paper which might actually be foil or something like that which wouldn't be flammable.
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Good luck getting saltpetre in this day and age without being investigated by the FBI, HLS, CIA, NSA, TLA, STFU and POTUS.
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"Good luck getting saltpetre in this day and age without being investigated by the FBI, HLS, CIA, NSA, TLA, STFU and POTUS."
Yeah, but it'll be OK once they see what it's being used for. Paper cylinders with fuses? Who would have a problem with that?!?! Oh. Good point.
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You could make your own birthday candles with beeswax and fireworks fuse.
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While I was reading it, I was thinking of the mechanism working just by the string (wick) burning up and releasing some potential energy from a spring... probably a bit safer than saltpeter, no?
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