I found this video a couple of months ago, of some rather stranger but nice looking japanese sparklers.
I have experimented some with these, since they're EXTREMELY difficult to make perfectly every time.
Composition Name: Senko Hanabi Sparkler
Creator of composition: Unknown
Composition type: Composition that will make everything else burn and emit sparks.
6 parts KNO3,
3 parts Sulfur,
1 part Charcoal.
When this composition is ignited, it will turn into a liquid "blob" which will ignite anything it touches.
It burns rather slowly, and emits nice looking occasional sparks as it is burning.
A neat trick is to take a tiny-tiny spoonful of composition and put it into a piece of fire-resistant paper.
Gather the composition in one spot, and roll the papir into a tail. Just like 'throwdown crackers', but a lot thinner.
Edited by Ubehage, 23 December 2017 - 07:25 PM.