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[bigtonyicu]

Hi everyone,

I was doing some reading and someone was talking of seperating the layers with of colour in a colour changing star with something caled "Dark Fire" he didn't give the composition all he said is it's a high binder & Charcoal, low sulfure & KNO3 black powder. it's a very slow burning composition arround 2 sec/mm.

So I've tried to make something that would meet those criteria and I'm not having much luck
KNO3 52%