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.

Diagram of completed Waterbomb BaseWaterbomb Base Crease Pattern
StepDiagram
1. Start with square of paper, white side upA square of paper, white side up
2. Fold the paper in half diagonally and unfoldFold and unfold, diagonally
3. Fold the other diagonal and unfoldFold and unfold second diagonal
4. Turn the paper overTurn the paper over
5. Fold the paper in half, edge to edge and unfoldFold in half, edge to edge
6. Fold the other edge to edge and unfoldFold and unfold edge to edge
7. Turn the paper overTurn 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.Waterbomb Base assembly
9. Like this. Squash the paper flat.Waterbomb Base in progress
10. You have completed the Waterbomb BaseDiagram of completed Waterbomb Base
Waterbomb Base
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