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January 8, 2006
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Tetroon
Here's how to build your own 5-foot tetroon. This balloon is easy to make and can be made in 30 minutes or less.
Supplies:
- 4 30-gallon black trash bags, MUST be 0.5 MIL or thinner.
- Masking tape, scotch tape or any other lightweight tape
- Scissors
Instructions:
- Cut open the bags and lay them out on an open floor (such as a garage), as shown below.
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Tape the four together, making sure you overlap them a bit.
- Fold the rectangular sheet in half:
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Tape the two shorter sides together. Leave the other side open until the next step.
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Pull the open end apart until C and D are touching.
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Tape the ends together, making sure C and D are still touching.
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Your tetroon is now complete. Choose a corner and cut a few inches off for the mouth.
The finished balloon:
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