> I meant the other kind of termite, a mixture of aluminum powder and rust Hehe, I know. It was something we used to play around with in chemistry labs as a practical example of a redox reaction. Anything that made lots of smoke, light and smell was always popular (with the boys) The ferinstance we were given, welding rails, is the example here http://en.wikipedia.org/wiki/Thermite We had a guy fired for trying the pot permangante/glycerol method further down that page. He'd already had a warning for iodine/ammonia http://en.wikipedia.org/wiki/Nitrogen_triiodide This was in a resin lab, which contained many flammable solvents, and a naked flame was as welcome as a **** in a swimming pool. And much more dangerouser of course -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist