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.