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Hey,
I can't stress how important it is to mix the powders with a wetting agent (binder) ping pong ball lacquer, nitrocellulose lacquer, dibutyl phthalate as the potassium perchlorates and chlorates can be very sensitive to being set off by friction. I read where the Palestinian suicide bombers tried to use potassium chlorate based explosives and it would explode too early on them leading to an early ticket to heaven. ;-)
A reasonable igniter can be made by simply taking 4.42gms. of copper oxide (CuO) and 1 gms. of aluminum powder. Get the finest powder you can find. (use Ebay) Use the 4.42 : 1 weight ratio to mix larger amounts, mix it up well in ping pong ball lacquer and use 30 to 32 gauge nichrome wire. It will ignite pretty well without the use of oxidizers. This of course requires a 12V launch system and there might be a one to two second delay before the igniter flares but it works. I wouldn't use it for a drag race but I highly recommend you give it to the competition! :-)
Kurt