Half teaspoon Sodium Bicarb. and a splash of vinegar. Safer than dry ice
(no burns) easier to obtain and just as effective. Strong enough to unblock
waste pipes!
AndrewF
>Sorry to burst your bubble, but I saw some kids doing the dry ice in film can
>thing last summer and it's much less dangerous than you made it sound. These
>kids ranged from mid-grade school down to upper toddler, and their parents
>were
>enabling them.
>How it worked: They would put a chip of dry ice into the film can, dump in a
>little bit of water (to speed it up, I guess), slap on the lid, and put it on
>the sidewalk lid down. After a varying amount of time the can would "pop", and
>would fly about 10 to 15 feet straight up. Then the kids would grab the can,
>and do it all over again. After a while, though, the cap wouldn't seal very
>well, and you could see water fizzing out around the lid.
>
>Kinda on topic remark: Sorry, didn't get any pictures, but if I had, they
>would
>have been shot with an Olympus.
>
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