Well I registered to Rotten Eggs.com, and someone made an egg (thread) about how to make easy flash powder, and there it was.
You call RottenEggs "studying" ? Sorry but that strikes me as both funny and dangerous. Something you should know about "alternative" pyro sites. If they include lots of 'dirty tricks, loud bangs, and kewl bomz' material, SKIP IT. There is so much inaccurate and down-right dangerous material on those it's not worth trying to sift for the nuggets of truth. Does anyone on here know how many fingers Kurt Saxon ( the original guru of improvised crap ) has left to shake hands with ? I am not sure, is he down to 7 or is it 6 ?
Buy Introductory Practical Pyrotechnics, or search the threads on this site, or get a copy of Lancasters Fireworks Principles and Practices as a Christmas gift if you can't afford it. It's way more expensive to end up like this :
Hand Injury