Kirigami is a paper based art and design practice that combines folding with cutting to create forms, patterns, structures, cards, sculptures, and other paper constructions. The term is commonly associated with Japanese paper craft and is formed from Japanese words relating to cutting and folding paper. Unlike traditional Origami, in which cutting and adhesive use are generally avoided, Kirigami deliberately removes portions of the sheet to enable structures that folding alone cannot easily produce.
Cutting can create openings, silhouettes, hinges, tabs, pop up mechanisms, symmetrical motifs, or complex three dimensional transformations. Kirigami can be decorative, artistic, educational, architectural, engineering oriented, or recreational. The combination of cutting and folding provides a broader structural vocabulary than either operation alone because removing material changes the geometry while folds define controlled deformation. The practice therefore exists at the intersection of paper craft, design, geometry, sculpture, and mechanism development.
The historical background of Kirigami is connected with Japanese paper traditions, decorative cutting, ceremonial objects, and paper folding, although related cut paper practices have developed independently in many cultures. Contemporary Kirigami emerged as a recognisable international practice through the development of increasingly sophisticated paper constructions and educational resources. Pop up books and movable paper mechanisms share many principles with Kirigami even when they are classified under different terminology.
Modern artists and designers have extended the practice into large sculptures, architectural prototypes, packaging, stage design, mathematical models, and experimental engineering. The term is therefore used both for traditional or recreational paper work and for advanced structures in which cuts and folds are carefully calculated. Historical terminology can vary, so not every culturally specific cut paper tradition should automatically be labelled Kirigami.
The fundamental difference between Origami and Kirigami is the deliberate use of cutting. A cut can create a hinge, remove a region, split a surface, or allow one section to pass through another. This substantially increases the range of possible transformations. A flat sheet can be turned into a pop up form by combining cuts with mountain and valley folds, while repeated cuts can create expandable structures that change dimensions when pulled or compressed.
The placement, length, width, and orientation of cuts determine the remaining structural connections. If cuts are too long or too close together, the paper can lose stability. If bridges are too narrow, they may tear during folding. Kirigami design therefore requires simultaneous consideration of cutting geometry, fold geometry, paper thickness, mechanical stress, and intended movement.
Kirigami has important relationships with pop up engineering and deployable structures. Pop up cards and books use cuts, folds, tabs, hinges, layers, and linkages to create three dimensional forms when a page is opened. More advanced mechanisms can produce moving animals, buildings, figures, or geometric shapes through carefully synchronised folds and cuts. Designers can analyse these structures using principles of kinematics, which concerns movement and relationships between rigid or deformable components.
Kirigami inspired engineering has investigated expandable materials, medical devices, flexible electronics, packaging, deployable structures, and mechanical systems. The attraction of Kirigami in these contexts comes from its ability to convert relatively flat materials into structures that can expand, contract, bend, or deploy. The artistic practice and engineering applications share geometric principles but differ in performance requirements, material selection, precision, and testing standards.
Symmetry is common in Kirigami because folding a sheet before cutting can produce repeated patterns efficiently and accurately. Radial symmetry, bilateral symmetry, tessellated cutting, and repeated slots can produce visually complex structures from relatively simple operations. Asymmetrical designs can provide more irregular or representational forms and may be necessary when the desired movement is directional. Negative space becomes structurally important because the removed paper determines how the remaining material can move.
In pop up constructions, the shape of an opening can control how a raised element appears when the page is opened. Layering can introduce depth, while alternating cuts and folds can create accordion like expansion. These methods demonstrate that Kirigami is not merely decorative cutting but can function as a systematic method for designing mechanical transformations from sheet material.
Paper selection affects Kirigami because repeated folding and cutting concentrate stress around hinges and narrow bridges. Lightweight paper is easy to cut and fold but can become weak after repeated movement, while card provides greater rigidity but may require scoring and more powerful cutting tools. Fibre direction can influence how a hinge bends and how easily a narrow section tears. Surface coatings can affect adhesive bonding when layers are joined.
For prototypes, inexpensive paper may be sufficient, but functional engineering structures may require polymers, composites, metals, or other materials inspired by Kirigami principles. Designers must consider fatigue when a structure is intended to open and close repeatedly. A mechanism that works once may fail after repeated cycles because folds become weakened and cut edges develop tears. Physical prototyping is therefore essential for validating theoretical designs.
Kirigami is useful in education because it combines geometry, measurement, cutting, folding, spatial reasoning, and mechanical understanding. Students can construct simple pop up structures and observe how changes in cut length, fold position, and paper thickness affect movement. In architecture, Kirigami models can explore transformable surfaces, deployable structures, and compact forms. In product design, the same principles can inform packaging that unfolds into displays or functional structures.
In engineering, computer modelling can simulate how a cut sheet will deform, while digital fabrication can produce highly precise patterns. Laser cutting, plotter cutting, and computer controlled machinery can increase repeatability, although the kerf and heat effects of a particular machine must be incorporated into the design. The physical sheet remains the final test because real materials do not behave exactly like ideal mathematical surfaces.
Kirigami is sometimes incorrectly treated as simply Origami with scissors, but the structural consequences of cutting make it a distinct design approach. A single cut can change connectivity and allow a structure to move in ways that folding alone cannot achieve. It also differs from Paper Cutting because Paper Cutting may focus on a static visual pattern, whereas Kirigami commonly integrates cutting with folding to create form or movement.
Papercraft is broader and may involve cutting and folding without the specific emphasis on integrated geometric transformation. Advantages of Kirigami include material efficiency, compact storage, rapid prototyping, visual complexity, and the ability to create deployable structures from flat sheets. Limitations include material fatigue, fragile hinges, restricted thickness, dimensional sensitivity, and the difficulty of scaling delicate paper mechanisms. Its significance extends from traditional paper making into contemporary art, education, architecture, product design, and engineering research.
