How to make Firework Rockets (Cored Black Powder)

A short video showing the process of making a small Black Powder rocket. \r
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This video is intended for educational purposes only. Please do not replicate anything you see in this video unless you are trained to do so and are able to do so in a safe and LEGAL manner.\r
If you want any information chemicals or tooling message me and i will give you the details\r
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The Nozzel is recycled clay from old fireworks\r
The fuel is: \r
70:15:10:5 \r
Potasium Nitrate: Bamboo charcoal(home made) : Sulfur : Parafin\r
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The powders are ball milled for 4 hours and the wax parafin is melted with heptane and mixed through the powder to reduce the dust\r
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The header is 70:30, Potasium Perchlorate : Aluminum powder and Chinky Titanium sponge\r
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The stick is 7mm by7mm by 750mm long