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I have been using a 70/30 whistle mix made by diapering as a booster for burst on spherical shells and it has worked well for me. At the Western Pyro Association Winter Blast I saw a lot of folks using flash as a booster and claiming it is "safer" than whistle for building spherical shells. The comment was that Whistle is more friction and shock sensitive than flash and hence flash is "safer". Their thought is that the closing of the shell inherently has frictional grinding of the whistle between the rice hulls and also potentially an impulse to the whistle from taping on the shell to settle the contents in order to help close the shell.
I would appreciate hearing what folks are using and why.
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Chemistry Of Falling Leaf Fuse
14 October 2007 - 06:54 AM
I am wondering if anyone know what falling leaf fues is made of? I was thinking about using some very small pieces as colored stars in a fountain. My idea is to cut them 1/3 - 1/2 of the size of the nozzle so they will not clog the nozzle but will add some colored bits. My concers is if they contain chlorates or something else that will get angry with the black powder composition I am using. 
Can anyone help me out with this?
Can anyone help me out with this?
