This simple square spring starts from a 8x8 matrix base. Two special folding techniques that you need to learn for this model are both square-fold and open sink-fold.

This modular square spring makes use of a simple square origami spring as a module. So you will need more than one square paper. One special folding technique that you need to learn for this model is pocket-fold.

This heart paper spring starts from square. You will need to apply a petal-fold and a crease pattern for this model.