3...2...1...POP!

For the Hiller Aviation Summer Camp, I've been testing various film canister rockets today, and here's the verdict:

• Alka-Seltzer and water work much better than vinegar and baking soda (more vinegar than baking soda works well, about 8:1 in volume), and less disgusting, and you can reuse the A-S pill immediately since not the whole pill is dissolved in one shot, and water is much more ubiquitous, and your mom
• Don't even bother with the black film canisters; the white semi-transparent/opaque ones with ridged lids (below) work much better because they don't leak and allow more pressure to build up inside
• Go to any camera/photo-processing store and ask for these canisters
  
  
  Have fun.