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Roman candle

Roman candles are a type of fireworks, with long, thick paper tubes that contain layers of "stars" and lifting charges.

A roman candle is constructed by the following method:

1. load a layer of bentonite clay into the tube to close off the end.
2. load a layer of lifting charge.
3. load a pyrotechnic star.
4. cover the assembly with a dusting of black powder.
5. load a layer of fuse down the inside of the candle to time the lifts.

• Larger roman candles will usually add more lift to the highest layers and less to the lower layers in order to cause the stars to lift to the same altitude.
• Some really large candles will load comet shells instead of stars.