NightHawkInLight Posted November 13, 2010 Share Posted November 13, 2010 Anyone happen to know what the comp might be for the shell shown in this video at 8:45 http://www.youtube.com/watch?v=pGP2Ktow0eE&feature=email&email=comment_received I've seen this effect many times before but never looked into what it was. Link to comment Share on other sites More sharing options...
fredhappy Posted November 13, 2010 Share Posted November 13, 2010 The distinctive "rushing"sound indicates that the star composition utilizes coarse particle size Mg/Al/. I also see a golden/orange tail, this looks like C to me, not a metal like Fe/Ti which is more distinctive and not so subtle. My best guess is a winokur formulae with coarse grade Mg/Al. Link to comment Share on other sites More sharing options...
ghost808 Posted November 13, 2010 Share Posted November 13, 2010 Wow that shell is really nice! I would love to know that comp. Too! Link to comment Share on other sites More sharing options...
Karlos Posted November 13, 2010 Share Posted November 13, 2010 Only silver comet with crackling microstars. Not glitter, not pop glitter. Look here: http://www.youtube.com/user/AmosNomore#p/u/21/qYlfghNUV5I (1:22) nagaoka hanabi Add 20 % of microstars grains to silver Ti or BP - Mg/Al composition and result will be similar. I tried this: http://www.youtube.com/user/HajdaHanabi?feature=mhum#p/u/33/4Bl7BlK3Www Link to comment Share on other sites More sharing options...
fredhappy Posted November 13, 2010 Share Posted November 13, 2010 Wow, I've learned something again here. Never knew those microstars gave that effect. Beautiful vids, especially the Japanese one. Link to comment Share on other sites More sharing options...
NightHawkInLight Posted November 13, 2010 Author Share Posted November 13, 2010 I knew this could be done with microstars, but I was hoping there was an alternative. Using microstars means there are two compositions that must be made and perfected to work well together. That means a ton of experimenting if that's the only way. Link to comment Share on other sites More sharing options...
Mumbles Posted November 13, 2010 Share Posted November 13, 2010 I knew this could be done with microstars, but I was hoping there was an alternative. Using microstars means there are two compositions that must be made and perfected to work well together. That means a ton of experimenting if that's the only way. You know there's a published ratio and formulas given in Hardt. I'd start there. Chances are it will get you something that works pretty well if not very similar to that effect. KNO3 - 51.5C - 33S - 6.5Al flitters - 3Dex - 6 Mix 80 parts matrix to 20 parts dragon eggs and pump. Replace/add MgAl or Ti as you see fit. I do believe the stars burn pretty quick, so you may find you need to add some lampblack, coarse charcoal, or change the ratio a little to extend the tail. Link to comment Share on other sites More sharing options...
FREAKYDUTCHMEN Posted November 13, 2010 Share Posted November 13, 2010 Yes Karlos is right, crackling micro stars, primed and then pressed in C8 comets. The silver you see is from the MgAl in the crackling. Link to comment Share on other sites More sharing options...
Bonny Posted November 14, 2010 Share Posted November 14, 2010 In display shows I've shot many (Chinese) crackling crossette shells that have the same (awesome) effect, with the added break of the x-ette. I've made crackling comets using dragon eggs, but have not come close to the effect shown above, or what I've seen in displays.I think the eggs need to be very small to get enough going to create the nice sizzle. Link to comment Share on other sites More sharing options...
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