GUNPOWDER

How to Make Gunpowder

Steps

1.
1
The formula for Black Powder is 75% Potassium Nitrate (5 Parts), 15 % Charcoal (one Part), and 10% Sulphur (2/3 of 1 Part). These percentages are percentages by weight.

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2.
2
Mill the charcoal and sulphur for 4 hours.
3.
3
Add the potassium nitrate to the ball mill.
4.
4
Mill for 24 to 48 hours, the longer the better.
5.
5
The result is called meal powder.
6.
6
Of course the finished product is very dangerous. Please use extreme caution when handling or storing the powder; especially around high heat, electricity, or open flame.

Source:
http://www.wikihow.com/Make-Gunpowder