Mountain Fold Origami: Definition & Techniques

Origami, the ancient art of paper folding, has captivated people across cultures for centuries. Among its myriad techniques, the Mountain Fold is a fundamental origami method that adds dimension and texture to your creations. Let's delve into the definition, techniques, and applications of this versatile origami fold.

The Mountain Fold, also known as the Reverse Fold, is a basic origami technique that creates a ridged, mountain-like shape. It's called a 'mountain' fold because it results in a peak, much like a mountain range. This simple yet powerful fold is the building block for countless origami models, from simple cranes to intricate modular designs.

The Mountain Fold Technique

The Mountain Fold is deceptively simple. It involves folding the paper in half, creasing, and then unfolding it, leaving a sharp crease. This crease serves as the 'mountain' or peak in your origami model.

To perform a Mountain Fold:

1. Fold your paper in half lengthwise, creating a sharp crease down the middle.
2. Unfold the paper, leaving the crease visible.
3. Fold the paper in half again, this time perpendicular to the first crease, creating an 'X' shape.
4. Unfold the paper, leaving both creases visible. These creases form the 'mountain' or peak.

Creating Valleys with the Mountain Fold

The Mountain Fold also creates valleys when used in combination with other folds. By folding the paper over the mountain crease, you can create a valley fold, which is the inverse of a mountain fold.

To create a valley:

1. Fold the paper over the mountain crease, bringing the edges together.
2. Crease and unfold, leaving a valley crease.

The Mountain Fold in Modular Origami

The Mountain Fold is a staple in modular origami, a style that involves connecting multiple units to form a larger structure. The mountain and valley folds are used to create the interlocking points that hold these models together.

For instance, in the classic origami crane, the wings are created using mountain and valley folds. The wings are then folded in half, creating another set of mountain and valley folds that allow the wings to interlock with the body of the crane.

Mountain Fold Variations

While the basic Mountain Fold is simple, there are numerous variations that add complexity and interest to your origami.

One such variation is the Squash Fold, which involves squashing the paper flat on either side of the mountain crease. This creates a more pronounced peak and adds texture to your model.

The Squash Fold

The Squash Fold is a great way to add dimension to your origami. It's often used in models like the origami fish or the origami heart.

To perform a Squash Fold:

1. Fold your paper in half to create a mountain crease.
2. Unfold the paper slightly, then squash the paper flat on either side of the crease.
3. Refold the paper, creasing the new folds sharply.

The Pleat Fold

The Pleat Fold is another variation of the Mountain Fold. It involves folding the paper into a series of small mountain folds, creating a pleated effect.

The Pleat Fold is often used in origami clothing and dress designs, as it creates a ruffled or pleated effect that mimics fabric.

Origami is a journey of discovery, and the Mountain Fold is one of the first steps on this path. Whether you're a beginner or an experienced folder, exploring the Mountain Fold and its variations can lead to countless beautiful and intricate creations. So, grab some paper and start folding - the world of origami awaits!