What Is A Squash Fold In Origami And How Do You Make One?

A squash fold is a basic origami technique that flattens a lifted flap into a symmetrical diamond or triangle shape. You lift a flap, open its layers, and press it flat so the crease runs down the center. It shows up in models like the crane, the frog, and many flowers, and it is usually one of the first folds a beginner learns after the valley and mountain folds.

What Is a Squash Fold in Origami and How Do You Make One?

A squash fold turns a raised flap into a flat, symmetrical shape by spreading its layers apart and pressing them down. The fold gets its name because the paper is “squashed” flat against the table.

The key idea is that you are not folding a single layer of paper. You are opening a pocket that already exists and flattening it into a new shape. That is why the squash fold looks confusing the first time and simple the tenth time.

Here is the basic sequence:

• Lift the flap you want to squash so it stands up from the table.
• Open the flap along its existing crease so the two layers separate into a pocket.
• Press the top edge of the flap down toward the table while spreading the sides outward.
• Flatten the paper so the new crease runs straight down the middle of the squashed shape.

The result is usually a diamond or a triangle. If your squashed shape is lopsided, the flap was not centered before you pressed it down. Undo it and try again with the flap standing straighter.

Why Does the Paper Actually Flatten When You Squash It?

Paper folds flat because it has almost no thickness and it bends along a line rather than stretching. When you squash a flap, you are asking the paper to change direction at a crease instead of stretching to fit.

This matters because paper cannot stretch much. If you try to force a squash fold where the geometry does not allow it, the paper will buckle, wrinkle, or tear instead of lying flat. The fold only works when the creases already in the paper line up to make room for the new shape.

That is also why pre-creasing matters. A squash fold is easier when the flap has a clear center crease to guide it. Without that guide, you are guessing where the middle is, and the squashed shape comes out uneven.

How Do You Make a Squash Fold Step by Step?

Start with a square of paper and a flat surface. Thin paper works better than thick paper for squash folds, because thick paper resists lying flat in tight spaces.

Follow these steps:

• Place your model so the flap you want to squash points up or to the side, whichever the diagram shows.
• Lift the flap with one hand so it stands away from the rest of the model.
• Slide your other hand into the opening at the base of the flap to separate the two layers.
• Push the top of the flap down toward the table as you spread the layers apart.
• Line up the edges so they meet the edges of the model underneath.
• Press the whole shape flat and run your fingernail along the new creases to sharpen them.

The most common mistake is pressing too early. If you flatten the flap before the layers are fully open, the paper creases in the wrong place and the shape will not sit flat. Open first, then press.

How Is a Squash Fold Different From a Petal Fold?

A squash fold flattens one flap into a single new shape. A petal fold lifts and flattens a larger section that usually involves two flaps at once, creating a shape that looks like a flower petal.

The two folds are related, and beginners often mix them up. Both involve opening layers and pressing them flat. The difference is scale and how many flaps are involved.

A petal fold is generally harder because it moves more paper at the same time. If you can do a clean squash fold, you already have most of the skill a petal fold needs.

What Paper Works Best for Squash Folds?

Thin, crisp paper works best. Standard origami paper, sometimes called kami, is made for this kind of folding and holds a crease without fighting back.

Thick paper, foil-backed paper, and paper with a heavy coating make squash folds harder. They resist lying flat and tend to spring open after you press them down.

If you are learning, use a larger sheet. A square that is 6 inches or larger gives your fingers room to open the flap and press it flat. Small paper makes every fold tighter and less forgiving.

Why Does My Squash Fold Keep Coming Out Crooked?

A crooked squash fold almost always comes from an off-center flap. If the flap was not lined up before you started, the squashed shape inherits that error.

Other common causes:

• Pressing down before the layers are fully separated.
• Using paper that is too thick to lie flat.
• Rushing the crease and not sharpening it with a fingernail.
• Folding on a soft surface like a carpet instead of a hard table.

The fix is usually to unfold and start the flap again. Squash folds are easy to redo because they rarely damage the paper unless you force them.

Where Do Squash Folds Show Up in Real Models?

Squash folds appear in a huge number of traditional and modern origami models. They are used to shape wings, legs, petals, and heads.

You will find them in the classic crane, where they help form the neck and tail. They show up in frogs, where they create the legs. Flowers like the lily use squash folds to build the petals. Many animal models use them to shape the face or body.

Because the fold is so common, learning it well pays off across almost every model you try afterward. It is one of the core building blocks of origami, along with the valley fold, mountain fold, and reverse fold.

Is a Squash Fold Hard to Learn?

A squash fold is one of the easier intermediate folds. Most people can do a clean one after a few tries on a large sheet of paper.

The difficulty is not in the motion. It is in understanding that you are opening a pocket, not folding a flat layer. Once that clicks, the fold becomes quick and natural.

If you are brand new to origami, practice the valley fold and mountain fold first. Those two folds teach you how paper bends, and that knowledge makes the squash fold much easier to understand.