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Senko Hanabi Sparkler


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Try upping the charcoal a percent or two. I gave up on them once I read Shimizu couldn't make them reliably either.

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Our own Nighthawkinlight has posted a new video on these sparklers. Actually saw it in a Popular Mechanics article:

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Been trying many different ratios now. But it dosent change mutch. Im sure its the paper. Im using Silk paper/tissue paper

Edited by Sondre
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I think i did read that you could dip the sparkler is Potassium nitrate soulution and dry it but i dont know if its going to make a diffrence.

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Just tested this formula 6g kno3, 2g sulfur, 0.5g charcoal. It burns like a senko hanabi sparkler but when the drop forms it stops. Any suggestion what i can try ?
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After many tests ive found that this formula


6g Kno3


1.6g charcoal


2.6g sulfur


Is a really good starting point. and after testing that formula alot of times i added more sulfur about 0.5g-0.8g more then i test the composition and add a little more charcoal each test until i get the result i want. And this composition burn alot faster then many other senko hanabi compositions so first i tried to twist it really tight but that wasnt that great. So then i rolled it really tight between my thumb and point finger. that resultet in slow and steady burn. After all this i got pretty nice sparks probably the best senko hanabi sparklers i have made. I tried to do a video but the camera on my phone dosent pick up the sparks very well. i can do some more work on the formula to get the right amount of each chemicals but as i understand on these sparklers it has alot to do with the charcoal you have too and the other chems. So the only thing i can change now is the paper i guess and the paper does play a big role on these sparklers

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