(stands up in front of the group) Hello, my name is Joe and I'm a Stupid Experimenter With Explosives addict. In my teens I too tried playing iwth O2 & C2H2. I used bread bags. I filled one with nothing but O2, and not much happened, the match flared, and the bag burned with some vigor. Next I filled one with nothing but C2H2. And it flamed impressivly when I touched the match, on the end of a 6 foot stick, to it. Made a light "whump" sound, but not much more than that.
Thus emboldened, I ran the pressure down on the O2 to the same as the C2H2 and filled a bag with a mix of roughly equal parts of both gases. As soon as the match touched the bag, a concussion wave hit me and the flash singed my eyebrows above my glasses, and my hair, and I was enveloped in a haze of smoke and dust. Ears ringing and in a slightly dazed condition I realized that what I had just done was Not Smart.
