Origami bases are often the starting point of models and projects. The Waterbomb Base is one of a group of traditional bases that are used in both traditional and more modern origami design. It gets its name from the Waterbomb, a traditional design. Although it is very simple to fold, make sure you get the creases the right way round, otherwise you will end up with the Waterbomb Base’s close relative – the Square Base, or Preliminary Base which uses the same creases, just reversed.
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| Step | Diagram |
|---|---|
| 1. Start with square of paper, white side up |  |
| 2. Fold the paper in half diagonally and unfold |  |
| 3. Fold the other diagonal and unfold |  |
| 4. Turn the paper over |  |
| 5. Fold the paper in half, edge to edge and unfold |  |
| 6. Fold the other edge to edge and unfold |  |
| 7. Turn the paper over | |
| 8. Bring the mid-points of each side to the middle of the bottom. The paper will form two triangular flaps on each side. |  |
| 9. Like this. Squash the paper flat. |  |
| 10. You have completed the Waterbomb Base | |
