The Robert Freidus Collection, held at the
V&A Museum of Childhood has over 14000 card models exclusively in the category Architectural Paper Models. 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, JSC Models, 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 and
Inkscape. An historical example of highly specialized software is
Designer Castles for
BBC Micro and
Acorn Archimedes platforms, which was developed as a tool for creation of card model castles. CAD and CG software, such as
Rhino 3D,
3DS Max,
Blender, and specialist software, like Pepakura Designer from
Tama Software,
Dunreeb Cutout or Ultimate Papercraft 3D, may be employed to convert 3D
computer models into two-dimensional printable templates for assembly.
3D models to paper The use of 3D 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 are often unique to the subject and the tools available. Readability of file-formats including proprietary ones could mean that a model viewer and exporter is unavailable outside of the developer. Using other tools that capture rendered 3D models and textures is often the only way to obtain them. In this case, the designer may have to arrange the textures and the wireframe model on a 3D program, such as
SketchUp,
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. ==Subjects==