Pirotex Posted January 31, 2015 Posted January 31, 2015 (edited) Name of composition: Sunrise yellowComposition Type: Color metallicCreator: PirotexColor/Effect: Bright yellow Precedure/Preparation: Pump with water or 25% alcohol in water. NaNO3 - 55% Magnalium - 25% S -10% Charcoal (airfloat) - 5% Dextrin - 5% VIDEO: https://www.youtube.com/watch?v=QIY3sfNq7R0VIDEO2: https://www.youtube.com/watch?v=BP_YMSAnI24 Edited January 31, 2015 by Pirotex 7
nt8 Posted January 31, 2015 Posted January 31, 2015 This star comp. is very popular in our club The sunrise yellow is beautiful star, especially with 10% titan, that one member of club use it. 1
Pirotex Posted February 1, 2015 Author Posted February 1, 2015 (edited) nt8, Video? Edited February 1, 2015 by Pirotex
nt8 Posted February 1, 2015 Posted February 1, 2015 nt8, Video?https://www.youtube.com/watch?v=RmlKE3NyyL8&feature=youtu.be 1
nt8 Posted February 1, 2015 Posted February 1, 2015 (edited) nt8, very good! Ti - particle size?Not my shell, but i will ask the shellmaker See the 2013&2014 clubmeeting (http://www.amateurpyro.com/forums/topic/10503-clubmeetings-2012-13-14/), there also been some shell with sunrise yellow. Edited February 1, 2015 by nt8
nt8 Posted February 2, 2015 Posted February 2, 2015 nt8, very good! Ti - particle size?225-450 mic. sponge
Eric70 Posted February 2, 2015 Posted February 2, 2015 Pirotex and nt8, Beautiful yellow stars! What kind of primer is used on these stars?
Pirotex Posted February 2, 2015 Author Posted February 2, 2015 Eric70, Classic BP +5% magnalium, or just BP 2
nt8 Posted February 2, 2015 Posted February 2, 2015 Pirotex and nt8, Beautiful yellow stars! What kind of primer is used on these stars?Eric, no, no and no thanks for me! The star is 100% Pirotex's composition! Our club just use it, because this is amazing, bright & very impressive color! We use our club's hot prime, PIP50. (KP 50, C 15, MgAl20, redgum 10, dex 5) 1
Stef727 Posted December 6, 2015 Posted December 6, 2015 (edited) I want to make this comp (it looks amazing btw), but I have a few questions before I make it so I don't screw it up. Do I have to ballmill the comp without metals?? and If how much time? Could I cut the comp or can it only be pressed? Edited December 6, 2015 by Stef727
Zumber Posted December 6, 2015 Posted December 6, 2015 There is no need to ball mill that composition. 1
gregh Posted December 7, 2015 Posted December 7, 2015 I tried to make these once and they ended up as puddles. The NaNO3 sucked so much moisture from the air just overnight they completely liquefied. I am guessing they should have gone in the dry box immediately. 1
dynomike1 Posted December 7, 2015 Posted December 7, 2015 (edited) I never had any problem with NAN03. I bet fence post will light them. Edited December 7, 2015 by dynomike1
Maxim Posted December 8, 2015 Posted December 8, 2015 That must be VERY dirty NaNO3 you got there mate!
Mumbles Posted December 8, 2015 Posted December 8, 2015 Sodium nitrate is more hygroscopic than most of it's contaminants. It absorbs water out of the air above 66% humidity at 70F, 40% RH at 85F. Maybe it's just cold where you are.
Nessalco Posted December 8, 2015 Posted December 8, 2015 I just ordered some sodium nitrate. These stars are beautiful! Kevin 1
gregh Posted December 9, 2015 Posted December 9, 2015 Yeah, I tried to make them in June-July when it was mid 90's and humidity about that high...
pyrodoc Posted December 10, 2015 Posted December 10, 2015 My sodium nitrate also absorbed moisture. I realised after making the stars when they were not lighting up. Cold and cloudy here in my city so will wait till summer now.
Nessalco Posted December 13, 2015 Posted December 13, 2015 Got my sodium nitrate from Duda Diesel. I'm trying these as rolled stars. I've rolled a half kilo of cores from mustard seed, and another half kilo on top of some Yankie's purple cores. The comp rolls very easily using 50% alcohol. They are in the dry box right now, and they seem to be drying normally so far. If it ever snows I'll be testing them in shells. Kevin
Stef727 Posted December 13, 2015 Posted December 13, 2015 So I just made the stars and dryed them at 50 C and like 15h after I turned the dry box off they were already wet... You could feel the moisture in your hand and the stars break with just a hard press... I'm going to dry them again and right after that put them in a double zip bag.
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