
ground up aluminium and rust powder (also called thermite) is what they use to weld railway tracks together.
burns so hot, that i'll burn through almost anything.
www.thecatalyst.org/other/thermite/
( , Thu 26 Aug 2004, 20:38, archived)

I did... while trying to melt chocolate in a glass in a microwave. It looked cool! I wish we still had it (it ended up smashed)
( , Thu 26 Aug 2004, 20:43, archived)

we were at a family friends house and there was a glass candle next to me. eventually the wax burned to where the flame was right next to the glass holder and it melted and broke off.
( , Thu 26 Aug 2004, 20:45, archived)