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Pixie dust / Corolla stars


Norsepyro

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Having been fascinated by glitter stars ever since I started with pyro around 20 years ago, I have tried quite a lot of different formulas during the years. These are mostly Winokur types and variations, using atomized aluminium. I never had much success with MgAl glitters to be honest, although I think many nice effects can be made with the right sized material and formula. The gold tone from MgAl glitters is in my experience deeper(more orange) than from atomized, but the tail is more sparse with fewer and larger flashes. (Winokur 14 and 20)

The "Pirotex glitter" using sodium nitrate/MgAl is in a different category, where the glittering comes from a delayed reaction with coarse MgAl. A charcoal streamer(chrysanthemum 6 / 8 , TT) using KNO3 can also give a delayed glittering look when coarse MgAl is added, but the flashes are more branching and the color is white. Both are nice effects but I really prefer the "coppery" gold glitter from pirotex's formula! The downside is of course that you have to deal with the hygroscopic nature of sodium nitrate.

Which leads to another interesting and similar effect I see the manufacturers call "pixie dust" or "Corolla" :

https://www.youtube.com/watch?v=JzGlY9ZwiWI&ab_channel=PyroSonic

https://www.youtube.com/watch?v=aiYlo3p0WkU&ab_channel=unixoracle

https://www.youtube.com/watch?v=rA-OKg9YXyo&ab_channel=LambentPyro

This effect looks like a charcoal star with metal granules added, but I have never seen such sharp flashes when using ordinary granular Ti og MgAl.

 

I found a thread in a russian forum which linked to a chinese patent for this effect: 

https://patents.google.com/patent/CN100445241C/en

A derived formula was posted in the forum:
KNO3                            12
Charcoal AF pine         32 (homemade pine charcoal is said to be important!)
Sulfur                              8
SGRS                              5
KClO4                           25
Titanium (flash-cards) 20

Not everything in the text from the patent makes sense, but it seems like a slurry of titanium powder with binder(sgrs/dextrin) is smeared in a thin layer on a paper and allowed to dry.

The paper is then crumbled and the granules are likely sorted/graded and then added to the other star ingredients.

I tried the above formula using -100 mesh flake titanium which was granulated as specified, but the star would only give a ordinary titanium effect with drooping sparks and no flashing. This was when using 20-40 mesh and 40-80 mesh granulated (-100mesh Ti) bits. (It is however a great way to utilize such fine Ti powder anyways, since it does not give much of a tail otherwise, except in a willow star) 

Of course no specific grade of Ti is specified in the patent but someone has mentioned that the metalpowder might be titanium dihydride.

I have seen titanium dihydride for sale on the US market, so maybe someone will give this formula a try if they have some of it on hand ? :)

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3 hours ago, Norsepyro said:

Having been fascinated by glitter stars ever since I started with pyro around 20 years ago, I have tried quite a lot of different formulas during the years. These are mostly Winokur types and variations, using atomized aluminium. I never had much success with MgAl glitters to be honest, although I think many nice effects can be made with the right sized material and formula. The gold tone from MgAl glitters is in my experience deeper(more orange) than from atomized, but the tail is more sparse with fewer and larger flashes. (Winokur 14 and 20)

The "Pirotex glitter" using sodium nitrate/MgAl is in a different category, where the glittering comes from a delayed reaction with coarse MgAl. A charcoal streamer(chrysanthemum 6 / 8 , TT) using KNO3 can also give a delayed glittering look when coarse MgAl is added, but the flashes are more branching and the color is white. Both are nice effects but I really prefer the "coppery" gold glitter from pirotex's formula! The downside is of course that you have to deal with the hygroscopic nature of sodium nitrate.

Which leads to another interesting and similar effect I see the manufacturers call "pixie dust" or "Corolla" :

https://www.youtube.com/watch?v=JzGlY9ZwiWI&ab_channel=PyroSonic

https://www.youtube.com/watch?v=aiYlo3p0WkU&ab_channel=unixoracle

https://www.youtube.com/watch?v=rA-OKg9YXyo&ab_channel=LambentPyro

This effect looks like a charcoal star with metal granules added, but I have never seen such sharp flashes when using ordinary granular Ti og MgAl.

 

I found a thread in a russian forum which linked to a chinese patent for this effect: 

https://patents.google.com/patent/CN100445241C/en

A derived formula was posted in the forum:
KNO3                            12
Charcoal AF pine         32 (homemade pine charcoal is said to be important!)
Sulfur                              8
SGRS                              5
KClO4                           25
Titanium (flash-cards) 20

Not everything in the text from the patent makes sense, but it seems like a slurry of titanium powder with binder(sgrs/dextrin) is smeared in a thin layer on a paper and allowed to dry.

The paper is then crumbled and the granules are likely sorted/graded and then added to the other star ingredients.

I tried the above formula using -100 mesh flake titanium which was granulated as specified, but the star would only give a ordinary titanium effect with drooping sparks and no flashing. This was when using 20-40 mesh and 40-80 mesh granulated (-100mesh Ti) bits. (It is however a great way to utilize such fine Ti powder anyways, since it does not give much of a tail otherwise, except in a willow star) 

Of course no specific grade of Ti is specified in the patent but someone has mentioned that the metalpowder might be titanium dihydride.

I have seen titanium dihydride for sale on the US market, so maybe someone will give this formula a try if they have some of it on hand ? :)

There is high chance that most of formulas from patented literature just dont work.

You may try out this I just tested it over ground not in shell mine or fountain....I just made a stars and ignited over ground....it produces molten slag and it is throwed against high wind it flashes with yellow strobe type effect.

The formula is also collected from google patent document.

KNO3 50

Sulphur 15

Sodium bicarbonate 15

Magnelium 10

Charcoal 10

Sieved with 40 mesh screen and mixed well.

Then using NC lacquar stars are formed.

 

Edited by Zumber
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I agree that most formula in the chinese patents are unlikely to work in the proportions they are written, however the ingredients might be correct. 

Thank you for the glitter formula Zumber, I will give that one a try. 

Whenever I need a quick pyro-fix, I throw a couple of the pirotex glitters into the air and enjoy the beautiful golden flickering tail. The dark gold tone from the tail of this star is really unmatched! 🙂

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We are really working on same star having nice charcoal streamer effect followed by nice golden flickering tail behind.

This guy have success but we are still working on it.

https://youtube.com/shorts/So4PnyWZK7Y?si=G_x8Jx2jbkU48Bme

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1 hour ago, sachinagg said:

U know this guy? And which state he belong

Andrapradesh.

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1 hour ago, Zumber said:

Andrapradesh.

I know him ,nice person

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I dont know but I got his contact and I had discussion with him.

He clearly told he is not willing to  share any information related to fireworks.

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17 minutes ago, Zumber said:

I dont know but I got his contact and I had discussion with him.

He clearly told he is not willing to  share any information related to fireworks.

Last month I talk him for his product. For purchase

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Okay

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