Flash powder is a suitable choice for pyrotechnic effects, but safety precautions must be taken. Making flash powder isn't a project for children, and it requires working with hazardous materials. You need paper, aluminum powder, a metal cylinder, an anti-static bag, a scale that measures in single grams and potassium perchlorate powder.Continue Reading
Ensure that the work table is clean, flat and dry. There should be no chance of static shocks. Avoid wearing rubber shoes on synthetic carpets in dry air.
Measure the perchlorate to two-thirds of the size batch. For instance, a batch of 12 grams should contain 8 grams of perchlorate and 4 grams of aluminum powder. Don't mix more than 12 grams with each batch. Place the perchlorate on a sheet of paper, and use the metal roller to mill it into a fine powder. Re-mill the powder if it's lumpy. When finished, pour the powder into the mixing bag.
Fluff the aluminum by stirring it with a spoon or instrument. Stirring prevents the powder from clumping together. Measure one-third of your batch size of the aluminum powder, and place it in the bag.
Rock the bag back and forth until the chemicals are completely mixed. Place it in a sealed container, and store it in a clean, dry area. Store the powder away from other chemicals, and keep it away from children and pets.