wyzard10 Posted August 2, 2015 Share Posted August 2, 2015 This year we got a cake called jellyfish. It was a 16 shot cake that had silver/white spinning things that were bowl shaped as they dropped. Any idea how this is accomplished? 76fireworks has a video of this effect, cake id number is MS373 Link to comment Share on other sites More sharing options...
Mumbles Posted August 3, 2015 Share Posted August 3, 2015 The cake looks like it could be just flying fish fuse. For a bigger effect, something like a tourbillion might be better suited. Link to comment Share on other sites More sharing options...
nater Posted August 3, 2015 Share Posted August 3, 2015 Mumbles is correct. This is an insert from a candle with the same effect as that cake. I would expect identical construction. Link to comment Share on other sites More sharing options...
OblivionFall Posted August 3, 2015 Share Posted August 3, 2015 Last night at my local beach there was a big fireworks show and a couple of the shells had that same effect. Looks like little girandolas/dolas (whatever you call them) shooting through the air. Very cool indeed. But yeah for big commercial shells they use Tourbillions, for a small shell like that they probably worked flying fish fuse into little spirals then stuffed them into a shell. Link to comment Share on other sites More sharing options...
Andres1511 Posted August 3, 2015 Share Posted August 3, 2015 Hummers or whirlwinds/tourbillions (whatever you want them to call) are probably used. There's detailed information about their construction on skylighter. Link to comment Share on other sites More sharing options...
pyrojig Posted August 4, 2015 Share Posted August 4, 2015 I like the effect called jelly fish for areal shells . It is a half hemi filled with colored stars , and the other half usually a few streamer stars . This can create can be accompanied by a ring of streamers as well to create the bottom of the cap. It is a really wonderful effect when shot in a axis good for view. I like the larger shells that the Japanese do with the " ghost effect" in the cap. I find that these are possible in 4" but 6" shells are much easier to make the effect with . Link to comment Share on other sites More sharing options...
wyzard10 Posted September 3, 2015 Author Share Posted September 3, 2015 Well I broke down and got one of the jellyfish cake and broke it down and it has the same fuse as in naters picture. I have experimented with it and flying fish fuse and there isn't a comparison. This fuse is very energetic and throws off sparks like a sparkler, any idea what kind of fuse this is? Link to comment Share on other sites More sharing options...
MondoMage Posted September 10, 2015 Share Posted September 10, 2015 I believe the "trade" name for it is chrysanthemim fuse (Skylighter and others list it under that name). Bent into that particular shape, when it lights the fuse will spin, putting out an umbrella-shaped cloud of sparks. Link to comment Share on other sites More sharing options...
dynomike1 Posted September 13, 2015 Share Posted September 13, 2015 Ok looks like we have gotten by the fish fuse. Does anyone actually know how to build a Jellyfish shell? I think i have it figured out, but i keep arguing with my self on which end apexes first, the heavy end or the light end of the shell. Link to comment Share on other sites More sharing options...
rogeryermaw Posted September 13, 2015 Share Posted September 13, 2015 If I remember correctly, to get a pattern shell to break in a specific orientation, typically, a drag line is used. I have heard some experiment with a finned tail but have no details on that. Those jellyfish round shells are pretty awesome! Link to comment Share on other sites More sharing options...
dynomike1 Posted September 13, 2015 Share Posted September 13, 2015 I guess i could fuse it to where it starts back down, then the heavy end will go down first. Put the top of the jelly fish on the light end. Seems like it would be easier to weight one end of the shell, since you will only have 3-4 comets just under the head. Link to comment Share on other sites More sharing options...
MrB Posted September 15, 2015 Share Posted September 15, 2015 I guess i could fuse it to where it starts back down, then the heavy end will go down first. Put the top of the jelly fish on the light end. Seems like it would be easier to weight one end of the shell, since you will only have 3-4 comets just under the head.Just weighting it wont be reliable. It just causes it to rotate around the offset center of mass. Implement drag. A length of rope is typically used.B! Link to comment Share on other sites More sharing options...
dynomike1 Posted September 16, 2015 Share Posted September 16, 2015 That may be what I have to do, or like Ned put fins on it. Link to comment Share on other sites More sharing options...
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