5-foot Tetroon

Tetroon

This 5-foot tall tetroon is probably the easiest to make. You can do it in 30 minutes or less.

Supplies:
  • 4 Hefty Basics 30 gal. black bags OR 0.4 MIL 30 gal. Ruffies bags
  • Masking tape, scotch tape or any lightweight tape
  • Scissors
Instructions:
  1. Cut open the bags and lay them out on an open floor (such as a garage), as shown below.
  2. Tape the four together, making sure you overlap them a bit.
  3. Fold the rectangular sheet in half:
  4. Tape the two shorter sides together. Leave the other side open until the next step.
  5. Pull the open end apart until it the ends of A and B are touching.
  6. Tape the open end together, making sure that A and B always touch.
  7. Your tetroon is now complete. Choose a corner and cut a few inches off for the mouth.
The finished balloon:

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