1. Peel off the labels on the tennis ball cans.
2. Cut off the end of one of the cans (barrel).
3. Measure the sizes of the fuel chamber and barrel, and make fuel chamber 1.5 times smaller than barrel.
4. Take one of the caps and poke a few small holes into it.
5. Tape cap in between the the barrier and fuel chamber, then tape those two together.
6. Find desired angle, which was 38 degrees, and use a protractor to cut the angle into the leftover piece from tennis can. Tape it to the actual cannon.
7. Poke small hole in the back of the cannon for the ethanol to be poured into.
8. Make sure the cannon is all stable and set and we're done.
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You were very descriptive on the procedure, so descriptive that someone who knows nothing about it could build it. Good job!
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