The traditional version of the self-carving jack-o'-lantern demonstration involves a chemical reaction that produces acetylene gas, which is ignited to blow the face out of a pumpkin. It's a spectacular demonstration, but it's also dangerous. You can produce the same effect, minus the danger, by producing non-toxic carbon dioxide gas inside the pumpkin. I've got a couple of ways you can do this. You can get enough pressure performing the reaction in a plastic baggie to 'carve' the jack-o'-lantern without producing a dangerously loud noise or explosion. So, if you've wanted to try the self-carving jack-o'-lantern project, but didn't want to take the risk or didn't have the materials, this version may be just what you need.
Self-Carving Pumpkin Instructions | Watch the Video
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