How to make a modular square origami spring

(page 8)

13th picture of modular square origami spring

13.

Flatten two pockets.

Prepare to apply a "mountain-fold" .

14th picture of modular square origami spring

14.

Start applying the "mountain-fold" of the step #13.

1 2 3 4 5 6 7 8 9 10

11 12