This is how you start out making the traditional origami Waterbomb and that is where this base gets its name.

Waterbomb Base Step 1

1) Start out with a square colour side up and Valley Fold it in half

 

Waterbomb Base Step 2

2) Crease it well and unfold.

 

Waterbomb Base Step 3

3) Fold the square in half vertically now.

 

Waterbomb Base Step 4

4) Crease it well and unfold.

 

Waterbomb Base Step 5

5) Turn the paper over and rotate it 45 degrees. Fold it in half horizontally.

 

Waterbomb Base Step 6

6) Crease it well and unfold it.

 

Waterbomb Base Step 7

7) Fold it in half vertically now.

 

Waterbomb Base Step 8

8) Crease it well and then unfold it.

 

Waterbomb Base Step 9

9) Now you have all the base creases you need. Start pinching in the left and right sides following the existing creases.

 

Waterbomb Base Step 10

10) Pinching in the sides…

 

Waterbomb Base Step 11

11) Flatten everything following the existing creases. The paper should go where it’s supposed to go.

 

Waterbomb Base Step 12

12) The completed Waterbomb Base.

 

Waterbomb Base Step 13

If you open the paper up you’ll see the following Mountain (black) and Valley (red) folds.

 

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