In this guide we’ll discuss how to make a sparkler firework. It’s easier and cheaper than you might think, and is a great starter project for someone just starting to learn how to make fireworks.
How to make a sparkler:
1Pour all the dry ingredients into a large container. Mix in dextrin solution until you get a moist, sloppy solution. If you’d like a green color add in 4 tbsp barium nitrate.
2Dip iron wires into your mixture. You’ll need to leave a few inches of space at the bottom clean so you have room to safely hold the sparkler !
3Put the sparklers in a dry place away from heat or open flames. They need to spend some time drying and hardening to the wire.
4Once dry, simply light the top end of the sparkler and let the sparks fly! Remember to always safely handle fireworks and check local firework laws before making or using fireworks.
So how does this actually work?
(Taken from this article)
A sparkler consists of a chemical mixture that is molded onto a rigid stick or wire. These chemicals often are mixed with water to form a slurry that can be coated on a wire (by dipping) or poured into a tube. Once the mixture dries, you have a sparkler. Aluminum, iron, steel, zinc or magnesium dust or flakes may be used to create the bright, shimmering sparks. The metal flakes heat up until they are incandescent and shine brightly or, at a high enough temperature, actually burn. A variety of chemicals can be added to create colors. The fuel and oxidizer are proportioned, along with the other chemicals, so that the sparkler burns slowly rather than exploding like a firecracker. Once one end of the sparkler is ignited, it burns progressively to the other end. In theory, the end of the stick or wire is suitable to support it while burning.