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3" shell


hashashan

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Hi,

another 3"er

stars are C6 to red

burst is H3 on puffed rice, 2.5 grams Mg/KClO3 flash burst

the shell was pasted with 3 layers(the 3 strip method) of fiberglass reinforced gummed tape

 

 

http://www.apcforum.net/files/myshell.JPG

 

 

PS. the small one is the 3"er (duhh)

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The break was unsymmetrical and from the look of it, it must be the pasting. The colorchanging was a bit off, but it gave a strobe-like effect.

 

The shell was nice though, and the red was excellent, which formula did you use?

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3 strip pasting method is only usable for gummedpaper or pasting with kraft paper. A flash booster is also not nessesay when useing H3 as burst charge.

 

If you use fiberglasstape, than tape it in almost one piece.

 

The red looks great!

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The red was as simple as it gets,

the Sr(NO3)2,PVC,Mg (binded with PVC+THF)

 

I have to disagree with you about he symetry of the break.

The stars were a bit different in size so It may look unsymetricl but as I rememeber it it looked pretty darn symmetrical to me.

 

now about the 3 strip method:

Wat method should I use?

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Humm... I'm very interested in this composition, could you give us the exact amounts?please. Because I am having difficulty to find color composition with only PVC as chlorine donor.
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Red star #9

Source: rec.pyrotechnics. Post by Andrew Krywonizka. Composition from Lancaster[2].

Comments: Produce as a pressed star

Preparation:

 

Strontium nitrate.................................55

Magnesium.........................................28

PVC...............................................17

 

 

 

taken from wouters page

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  • 3 months later...

WOW,the red was awesome!!!

the best shell i have ever seen so far. 20/20

Really spectacular,congrulations.

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  • 2 weeks later...
Probably. You'll have to ajust the ratios in some amount to optimize color and burning caracteristics when using magnalium, since it reacts slightly different.
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  • 2 months later...
Well, it looks like he's not been back in a while. Maybe someone else can offer me help. The reason I asked this question above, is that if he did use H3 burst with chrysanthemum 6 stars, is there a certain way used to keep the chlorate from touching the stars? Simply enclose a tissue bowl well, or some other method? thanks for the help.
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Yes, you can use a tissue burst bag for added safety. But a lot of folks don't worry about the minimal contact and don't bother using them.
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