Weird Asymmetric Sonobe (WASS)

This unit behaves like the Sonobe unit and can be used to build similar shapes, but its structure is asymmetric. Solids built from this unit have plain square faces like those made with Moreno’s unit.

1. Start with a square

2. Fold in half

3. Fold and unfold at 45° angles at both ends

4. Inside reverse fold

5. Fold inside along precreased lines

6. A look inside

7. Mountain-fold flaps

8. Fold along the diagonal of the central square part

9. Three units can be connected into a pyramid, just as with regular Sonobe

10. Units partially connected

11. Single pyramid fully connected. Continue connecting more units to build spiked icosahedra and other similar shapes.

If you use duo paper, you can slightly modify the unit to get a color change. The color change is not symmetric, so it will not lead to a model with a uniform pattern. You can, however, combine units in different ways and mix units with and without color change for some interesting effects.

12. Start with step 5 of the regular unit

13. Pull out the upper triangular flap, folding it to the outside instead of inside. This will create the color change. Then continue with step 7 and following steps of the regular unit’s instructions.

14. Finished unit with color change