The waterbomb base (Spanish: la base bomba de agua) is one of the traditional bases; it has five points, four long at the corners and one at the center. The base is shaped like a flattened pyramid.

Folding the BaseEdit

Begin with a square

  1. Crease the horizontals as valley folds.
  2. Flip over.
  3. Crease the diagonals as valley folds.
  4. Bring the corners together, flattening and forming a triangle.