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 propriety 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.