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Build a mini air cannon! This is one of the 48 projects for our Instructables: Made In Your Mind (IMIYM) exhibition at the Children's Museum of Houst...
We are selective in our materials for cost, ease of use, and safety due to our high traffic (800,000 visitors annually). So, for our purposes, this de...
We offer optional video segments of each step in the actual exhibit. Here is a compilation of all the steps.
Using the lowest line on the cup as a guide, cut off and remove the bottom of the cup. Keep the edge as straight as possible.
Using roughly 1” pieces of tape, tape the CD to the bottom of the cup. Make sure to completely seal the cup to the CD.
Cut off the straight part of the balloon. You only need the round part.
Stretch the balloon completely over the top of the cup, keeping it as tight as possible. Pre-stretching the balloon may help get it on more easily.
Optional - Use tape to secure the balloon to the cup. We find that some kids pull a little too hard and pull off their balloons.
Aim the hole at a piece of paper (or other target), pull back on the balloon and let go! Remember that the cup isn’t empty – it is full of air which ...
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Posted:
May 24, 2012
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