This is how to easily turn a disposible lighter into a cracker bomb firework.
Disclaimer: This involves fire. Fire can burn you. I suggest that no one tries this.
PS. when watching the video you can see how super bright red the flint gets.
Step 1: Materials
One disposable lighter.
Basic Bic flint lighters work well (see picture). Electric lighters will not work.
Step 2: Remove Hood
Carefully remove Steel hood. You may need to use a key or a screw driver to pry it off.
Step 3: Dismantle the Rest of the Lighter.
Be very careful and remove the flint wheel. The two parts we need are the flint and the flint spring, these tend to fly out when you remove the flint wheel so be careful.
Step 4: Stretch the Spring Out and Wrap It Around the Flint
Make sure the spring is wrapped tightly around the flint. Putting the flint inside the spring loops works best. Keep the flint close to one side or the other. This will give a handle to hold while heating the flint.
Step 5: Heat Flint
Heat the flint with another lighter until it is glowing bright red.
Step 6: Stand Back and Huck
Throw at a hard surface and the flint will blow up into a bright flash and a shower of sparks.