This is an instructional for manufacturing your own homemade German Dark Al powder. Homemade aluminum powder may not be as good as Eckart aluminum powder; however it is practical for use in pyrotechnics. German Dark Al powder is a particular aluminum powder that has charcoal added to it to prevent oxidation while milling. Not only does charcoal prevent aluminum from oxidizing into aluminum oxide as it mills, it also makes the aluminum powder more reactive bringing about an acceptable product for pyrotechnics. German Dark Al powder is a key ingredient in many pyrotechnic compositions especially in low grade explosive compositions such as flash powder. German Dark Al powder can range from a coarse grade such as 100 mesh to a super fine grade such as 7000 mesh. The finer the grade of the aluminum, the more reactive it is.
Willow charcoal (1 tablespoon)
Ball mill (or rock tumbler)
Measuring tape or ruler
Scissors (or your hands)
Step 1: Measuring the Aluminum Foil
First, what you’ll need to do is use your scissors to cut ten 18 inch long pieces of foil.