#15393
Profile photo of Andrew Normand

have to try this

you can make a cheap homemade bottle valve from a cork and the valve from a old bicycle inner tube.

bike shop gave me a handful of old ones when I asked (the longer thinner type are better)

if you put a bit of vodka (rubbing alcohol works even better) pressurise the bottle a little bit and then pull the cork out you can make a cloud in a bottle

http://www.wimp.com/cloudbottle/

it gives a strong enough seal to make a cheap water rocket aswell (idea nicked from bang goes the theory)

http://www.youtube.com/watch?v=D2HqgEoOSMY

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