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This may be considered a broad category that contains origami and card modeling. Origami is the process of making a paper model by folding a single paper without using glue or cutting while the variation kirigami does. Card modeling is making scale models from sheets of cardstock on which the parts were printed, usually in full color. These pieces would be cut out, folded, scored and glued together.
Sometimes the model pieces can be punched out. More frequently the printed parts must be cut out. Edges may be scored to aid folding. The parts are usually glued together with polyvinyl acetate glue ("white glue" "PVA"). In this kind of modeling the sections are usually pre-painted, so there is no need to paint the model after completion. Some enthusiasts may enhance the model by painting and detailing. Due to the nature of the paper medium, the model may be sealed with varnish to last longer.
Printed card models became common in magazines in the early part of the 20th century. The popularity of card modeling boomed during World War II, when paper was one of the few items whose use and production was not heavily regulated.
Micromodels, designed and published in England from 1941 were very popular with 100 different models, including architecture, ships, and aircraft. But as plastic model kits became more commonly available, interest in paper decreased.
Since paper model patterns can be easily printed and assembled, the Internet has become a popular means of exchanging them. Commercial corporations have recently begun using downloadable paper models for their marketing (examples are Yamaha and Canon).
The availability of numerous models on the Internet at little or no cost, which can then be downloaded and printed on inexpensive inkjet printers has caused its popularity again to increase worldwide. Home printing also allows models to be scaled up or down easily (for example, in order to make two models from different authors, in different scales, match each other in size), although the paper weight might need to be adjusted in the same ratio.
Inexpensive kits are available from dedicated publishers (mostly based in Eastern Europe; examples include Halinski and Maly Modelarz, a portion of the catalog of which date back to 1950.
Experienced hobbyists often scratchbuild models, either by first hand drawing or using software such as Adobe Illustrator. CAD and CG software, such as Rhino 3D, 3DS Max, Blender, and specialist software, like Pepakura Designer from Tama Software and Waybe or Dunreeb Cutout or Ultimate Papercraft 3D, may be employed to convert 3D computer models into two-dimensional printable templates for assembly.
3-D models to paper models 
The use of 3-D models greatly assists in the construction of paper models, with video game models being the most prevalent source. The video game or source in question will have to be loaded into the computer. Various methods of extracting the model exist, including using a model viewer and exporting it into a workable file type, or capturing the model from the emulation directly. The methods of capturing the model is often unique to the subject and the tools available. Readability of file formats including propriety ones could mean that a model viewer and exporter is unavailable outside of the developer. Using other tools that capture rendered 3-d models and textures are often the only way to obtain them. In this case, the designer may have to arrange the textures and the wire frame model on a 3D program, such as 3DS MAX, Metasequoia, or Blender before exporting it to a papercraft creating program, such as Dunreeb Cutout or Pepakura Designer by Tama software. From there the model is typically refined to give a proper layout and construction tabs that will affect the overall appearance and difficulty in constructing the model.
Because people can create their own patterns, paper models are limited only by their designers imaginations and ability to manipulate paper into forms. Vehicles of all forms, from cars and cargo trucks to space shuttles are a frequent subject of paper models, some using photo realistic textures from their real-life counterparts for extremely fine details. Architecture models can be very simple and crude forms to very detailed models with thousands of pieces to assemble. The most prevalent designs are from video games, due to their popularity and ease of producing paper models.
The Papercraft Museum includes hundreds of models from different designers across a wide range of subjects. The models include very difficult and ambitious paper projects, including a life-sized Link from the Legend of Zelda, the Black Pearl from Pirates of the Caribbean and aircraft models, such as the Chengdu J-10.
Various models are used in tabletop gaming, primarily wargaming. Scale paper models allow for easy production of armies and buildings for use in gaming and that can be scaled up or down readily or produced as desired. Whether they be three dimensional models or two dimensional icons, players are able to personalize and modify the models to bear unique unit designations and insignias for gaming.
See also 
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