HEATKEYS

A collection of resources on the subject of designing and building plucked stringed musical instruments, from R.M. Mottola at Liutaio Mottola, nonprofit provider of design, research and educational resources to the lutherie community. The focus in th...

CAD guitar plans in DWG and DXF blueprints for all guitars: electric, acoustic, bass, classical, wood, archtop. Gibson, Martin, Fender, Dreadnought, 000, 0M styles. Custom designs for Luthier or hobbyist. Digital files for violin, banjo, & ukulel...

Academia.edu helps academics follow the latest research.

Be Communities is a social networking site for those in the architecture, engineering, construction, operations, and GIS communities with tools such as forums, blogs, a resource gallery, and a wiki for connecting, communicating, and learning from eac...

JTB World offers software, custom software development, consulting and more. AutoCAD specialist and developer.

GrabCAD - a free CAD model library with 2D / 3D CAD files available for software like SolidWorks, AutoCAD, Autodesk Inventor, Solid Edge, SketchUp etc.

CADTutor provides free video tutorials, articles, downloads and a busy community forum for users of AutoCAD and associated software.

Home of a free file identifier, also contains information on different file formats (useful for programmers), some samples, as well as information on designing new file formats.