this was not my idea, i found it on youtube.
WARNING: while using a Flash Grenade, it is a very good idea to wear non-flammable gloves, and sunglasses.
DISCLAIMER: If you end up hurting yourself or others or setting something on fire, then I take no responsibility for it.
Step 1: Materials
Two cigarette lighters, (a small bic one is fine)
the other one is to heat the flint up.
Step 2: Destruction!
It should look like the second picture.
Step 3: The Barrel
Step 4: The Flash Itself
Strech the spring so its relatively long, then wrap it around the flint.
CAUTION: make sure that the flint is very secure in the spring so that when you pull your arm back to throw it you don't end up setting your pants on fire.
Step 5: Using It!
It is also a good idea to decide where you are going to throw it, and make sure that nothing is highly flammable around the area you are going to throw it at.
-SAFETY WARNING TIP: I did this under adult supervision, and when you throw it, it would probably be safer not to pull your arm back past your ear, but to do a small underarm throw, and I would higly reccomend wearing entirely wool clothing.-
REMEMBER! IF YOU CATCH ON FIRE, STOP. DROP AND ROLL
And I also reccomend having a hose, or a bucket of water at hand.
Get the other lighter and hold the Flint Over the naked flame.
When it turns Red hot, then throw it!
(the one in the video wasn't so impressive because it cooled down a lot when I took pictures of it red hot)
PS: I HAVE NO IDEA WHAT THE OUTCOME OF WHAT IS WRITTEN UNDER WILL BE.
IT IS POSSIBLE IT WILL BLOW UP IN YOUR HAND.
If you are this crazy, hold it over the flame till it is white hot, then shoot it out of a bb gun.
SERIOUSLY DON'T DO IT.