Flash powder and Flash pots

[icicle]

I'm getting into photography and I want to go old school on my flashes,
I seen some good recipes for flash powder.
What I need to know is how would one build a flash pot?
I would like to be able to controll the direction of the flash.
I also know that the nice factory firing circuts are fine but, How ever in the event that I need to add 2 or more flash pots I want to controll the firing of them at one time instead of one by one.
I would also like to know what is the main differance between white and photo grade flash powder.
Thank you.

Edit: I would also like to point out That most of my photography is done in the outdoors and away from AC power.
And I do hold safety as A number one on my list.

 

[dvsDave]

Hey Icicle,

Unfortunately, your questions fall under our rules about not posting info about pyrotechnics.

flashcubes would be much safer in any case, but if you are looking to use flash powder in ANY form, please consult a qualified, licensed professional.

I am locking this thread so that there can be no other replies.

edit by DL: In addition to the above, I suggest checking out http://www.flashbulbs.com. (Ignore if you can, the scantilly-clad models. They sell flashbulbs on the site, really!)