How To Make A Ball Mill For Gunpowder
How To Make A Ball Mill For Gunpowder How to Make Black Powder or Gunpowder Azareal s Jun 10 2008#183; One is to mix the dry ingredients in a ball mill (like a rock tumbler) with lead balls (not steel they can spark) run the ball mill about 2 hours then filter the resulting black powder through a strainer so that the lead balls are retained in the strainer and the black powder is