Elite Engineer Posted April 5, 2013 Posted April 5, 2013 I'm beginning to prepare for an annual fourth of July firework show for a family get together. I have about 4 lbs of Potassium nitrate, and tons of sucrose at hand. I looked online and powdered dye is quite expensive ($65+), so I was wondering...would adding ground colored chalk to the KNO3 + sugar mixture cause the smoke to be colored? -cheers
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