bottle rocket engine

Make sure to enlarge it by 5%. I made it a bit too small for it to work.

materials for this to work: vinegar, baking soda, toilet paper, and a bottle rocket to mount it on.
How to use: make your bottle rocket,( you need to put a plug or something in it) to then proceed to pore the vinegar in to the bottle rocket, next put the baking soda in, next shake violently put the rocket on its stand and get away and get a good look at the rocket.