How to Make Fire Crackers from Party Poppers

Acquiring the Explosive

Locate a party popper. They can be found at: Party Shops Novelty shops and stands (like at carnivals) The toy aisle in some grocery and department stores

Remove excess paper/packaging. There will probably be a label on it and sometimes a band to protect the string to stop it from firing when not wanted (in packet).

Ignore the warning printed (normally in red) on the base of the first cardboard disk at the base.

Using a tool such as a screwdriver (or other thin wedge), pry away the first disk (the one at the base with the warning) to reveal the streamers.

Remove the streamers from the compartment. (There are some fun things to do with these)

Remove the second desk, revealing the empty shock wave chamber.

Carefully remove the charge and the string through the bottom (where the disks once were). You may need to use a toothpick or alike to thread some of the string through the small hole. You may also need to widen the small hole slightly. Although removing it should be safe as long as the string isn't pulled with reasonable force, they are explosives so still express caution while doing removing.

Detonating Your Firecracker

Pick your detonation method. Once you have removed the explosive there are a few ways to detonate it: By simply pulling the string from the rest of the explosive. By igniting the explosive directly with fire (instant ignition). By using a fuse (candle wick works) to lead fire down to the explosive.

Always use hearing protection while detonating, especially when in close contact. Although it is quieter than most fire crackers, it is still loud and could cause hearing damage.

Put on some gloves. Firmly hold the body of the explosive and the string in the other.

While keeping face and other unnecessary body parts away, pull the string away from the body of the explosive. The small piece of flint inside should light the gunpowder immediately and there will be a satisfying "bang."

Make a base for the explosive: Get a tealight candle. Remove the wax part from the tin. Remove the wick and the wick base (you can use later this for the 'Fuse' method). Optionally, cut back the tin so only a small 'tray' is left.

Insert the explosive string side down in the base you just created. Alternatively you can hold it with hand protection on (gloves) but it is more dangerous.

Hold an open flame from a match or lighter on the body of the explosive. Don't expect it to work first time, but prepare for it to go off as soon as the flame touches it.

Get the wick from the base in the 'Direct Flame' method and tie the explosive part to it using the string. Alternatively, for a faster burning fuse but a more dangerous method, dip the cotton string in oil, petroleum jelly, or other flammable substance.

Light the wick/fuse and get a considerable distance away. Let the flame get down to the base part of the explosive and hope for the bang.