Mortartube Posted October 14, 2011 Posted October 14, 2011 Metallic fire dust stars I Shimizu Shimizu Shimizu Shimizu Shimizu Shimizu name Silver wave No.1 Silver wave No.2 Golden wave No.1 Golden wave No.2 Golden wave No.3 Golden chrysanthemum Potassium perchlorate 50 35 Potassium nitrate 37 37 37 40 Antimony trisulfide 9 Realgar 9 10 Sulfur 9 10 Charcoal, air float 2 Aluminum, flake 50 65 47 47 47 30 Boric acid 1 1 1 1 Dextrin +5 +5 6 6 6 7 type pumped, cut, rolled pumped, cut, rolled pumped, cut, rolled pumped, cut, rolled pumped, cut, rolled pumped, cut, rolled solvent 35% alcohol 35% alcohol 35% alcohol 35% alcohol 35% alcohol 35% alcohol Hi, Can anybody please recommend a prime to light Shimizu Golden Wave No 2? I have no silicon. I do have Mg/Al, Al and Titanium sponge that might make good heat conductors. Also have Pot Perc as probably the best oxidiser to use. I have tried Sponeburghs Pinball prime. It will occasionally light these stars on the ground, but the prime usually burns off and the star glows a bit and then starts burning. Fired from a star gun, I can see the prime burn off as the star fires up and then it blows blind. The only other possibility is that the stars have become driven in from priming. I used dextrin in the prime instead of red gum (which was mentioned as an acceptable swap in the priming formula).
Bcorso85 Posted February 13, 2012 Posted February 13, 2012 the compositions made with high aluminum content need to be primed first with thermite' and then with BP. Here's a great link for you. It has several primes and what they're used for. Very self explainable...... http://www.pyroguide.com/index.php?title=Star_Primes
petroleum Posted February 13, 2012 Posted February 13, 2012 For flitters only step priming (two or three, depending on comp and Al used).
Arthur Posted February 13, 2012 Posted February 13, 2012 Silicon is useful because it forms a hot (molten sand!) slag that stays put when burned, so the heat from the cooling slag goes into the intended ignition process of the star rather than off into the atmosphere.
Tanner808 Posted February 16, 2012 Posted February 16, 2012 (edited) How about mixing some German dark aluminum 400 mesh in with some meal an using that as prime I just made some white stars (58 kno3, 40 aluminum, and 2 dextrin). I primed them with meal and aluminum and will test them Saturday night in shells. (this was my first time doing this with these stars with this type of prime) I have used this formula for white stars before and made tiger tail to white stars and all the whites ignited after the tiger tail burned. So it might be possible to prime them with a little bit of Tiger tail I also have primed this white with just meal and had some ignite and others not. Here is a vid Please ignore the yellinghttp://m.youtube.com/#/watch?desktop_uri=/watch?v=XfUPDGBLVSk&context=C36b9bbeADOEgsToPDskLShbzomOHIjNmFI_0JP-WS&context=C36b9bbeADOEgsToPDskLShbzomOHIjNmFI_0JP-WS&v=XfUPDGBLVSk&gl=US&bmb=1 The first couple shells with white ignited (2 inch) but the three inch shell didn't ignite at all. It is the shell after the three inch tiger tail. (the only good shell) Edited February 16, 2012 by Tanner808
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