AzoMittle Posted October 7, 2015 Share Posted October 7, 2015 (edited) There was some interest in the formulas I used in a video posted over in the Aeriel Shell section so I figured I would do an actual post on them in the 'right' section. Like I said I wasn't too happy with some of them so I am open to suggestions. Others, like the pink or purple, worked great. The whites/glitters/charcoal were a variety of things, including Spanish Whites, some willows, some lampblacks, a PTFE/Mg/BaN luce forte, etc etc. I used a lot of Ti alloys, MgAl, Alcoa 120, and large firefly flake Al. >>All Magnalium (-325) must be treated with Potassium Dichromate. For the most part I rolled these onto crackle cores. Primed with a superprime and then BP dust, a thin layer worked fine. The one percent dichromate is added loose, not part of the magnalium; I was hoping to use it as a flame envelope expander but I didn't notice anything so I wouldn't bother with that. Oh, and as for the answer to "How much lift did you use?!" It was three quarters of one tenth of the shell weight in 4FA 2FA plus about a tablespoon of 2FA 4FA. The shells were plastic hemis and the finished lift-and-leadered weight was between 1100 and 1500 grams. https://www.youtube.com/watch?v=J2ni1kyFfBk Red (From EH Lacquer Red)41...Ammonium Perchlorate22...Strontrium Nitrate12...Hexamine11...Dechlorane08...Magnalium (-325)03...Red Gum03...Sulfur01...Potassium Dichromate+10...Nitrocellulose Lacquer Orange (From Independence Tangerine)40...Strontrium Nitrate16...Dechlorane12...Magnalium (-325)10...Potassium Perchlorate07...Red Gum03...Lampblack01...Potassium Dichromate+04...SGRS Yellow26...Barium Nitrate18...Strontrium Nitrate16...Dechlorane12...Magnalium (-325)09...Potassium Perchlorate08... Red Gum05...Sulfur01...Potassium Dichromate+04...SGRS Green (From Emerald Green)51...Barium Nitrate15...Dechlorane12...Magnalium (-325)08...Potassium Perchlorate05...Sulfur05...Lampblack02...Red Gum01...Potassium Dichromate+04...SGRS Blue (From Pihko AP Blue)60...Ammonium Perchlorate20...Copper Oxide (Black)12...Sulfur09...Dechlorane03...Hexamine01...Potassium Dichromate+08...SGRS Purple50...Potassium Perchlorate16...Copper Oxide (Black)11...Dechlorane10...Strontium Nitrate07...Red Gum05...Hexamine01...Potassium Dichromate+04...SGRS Pink50...Potassium Perchlorate10...Potassium Nitrate08...Antimony Trisulfide06...Dechlorane06...Strontrium Carbonate05...Lithium Carbonate04...Red Gum03...Hexamine01...Magnalium (-325. dichromate treated)01...Potassium Dichromate+04...SGRS Edited October 9, 2015 by AzoMittle Link to comment Share on other sites More sharing options...
dynomike1 Posted October 28, 2015 Share Posted October 28, 2015 (edited) i would like to see how you got double breaks out of plastic hemis. That is mostly what i shoot. Edited October 28, 2015 by dynomike1 Link to comment Share on other sites More sharing options...
AzoMittle Posted November 2, 2015 Author Share Posted November 2, 2015 (edited) i would like to see how you got double breaks out of plastic hemis. That is mostly what i shoot. A couple different ways. I used crossettes as rising effects; one or two of them were shells of shells (or filled one hemi with stars and the other with 3-4 small shells); I can't find pictures online but some of the hemis I have there is a top cap instead of just the small ring, instead of gluing that cap on we glued a small shell on, almost like a peanut shell but with a 6" first break and a 2" second break. I suppose you could always cut a hole out if it doesn't come with the cap. Also double/triple petals add a layer.edit: You can also 'simulate' an extra petal (or more) by using extra large stars so as to create a gap in between stars, this can then be filled with extra small stars. Look up unequal sphere/circle packing patterns, there are a lot of different methods. Some quicklinks: wikipedia, and look specifically at the 8-fold cubic pack in this one. Doing this will cause the smaller and larger stars to ignite at the same time but burnout seperately. So you can actually get quite a few breaks out of a plastic shell: Rising effects --> Main shell break --> Inner shells --> Outer shells If you make the stars inside the shells crossettes you can multiply the effect. Same thing with making the rising effect into a scattering one, see page 234 §15.6 of Shimizu's FAST for details; these can be indefinitely stacked and chained outside of the shell assuming you have both physical space inside the mortar and timing space before the main break. Again, you can multiply the effect by using a full sized peanut shell. One last note, when making a shell of shells I've found it is easy to get some stars/comets/inserts to fit in between and underneath (as well as above) the smaller shells. Make use of dead space and remember that pyro is like language, the rules are descriptive not prescriptive meaning whatever works, works and if you have a different way of doing things then do it however you want. I hope all this helps, if anyone has any other ideas I would love to hear them and try them at the next shoot. Edited November 2, 2015 by AzoMittle Link to comment Share on other sites More sharing options...
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