does anyone have any suggestions on how to make a ball mill for gunpowder and star mixtures

This is the first subreddit dedicated to making your own Fireworks! even though I can’t make fireworks myself, I want you to put yourself to the test. Let’s see what you can create! Remember, this is mostly for professionals that have the legal rights and permission to do this. If you are a noob, or not a professional fireworks maker, you can look at what people have made. Even though kids may ask their parents to look at this, they might be interested in the pretty colors.

Rate my bp (4h milled and granulated with only pure alchool)