Aluminum Powder Question Newbie Questions .
Aluminum Powder Question posted in Newbie Questions: Okay, I know Flash powder is frowned upon here, but that is NOT my question. Please no major flaming, I am still learning some am wondering what the difference is between German Blackhead / Indian Blackhead/ normal Aluminum powder (10micron) 1250 mesh / Aluminum powder (20micron) 625mesh is.