HEATKEYS

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

Vlier provides the highest quality spring loaded devices, ball plungers, leveling mounts and mechanical components to aerospace, automotive and other major industries.

Autodesk User Group International (AUGI) discussion forums.

Eberl Iron Works, Rooftop Support Systems, Traffic Safety Products, Unistrut Buffalo Supports, Metal Fabrication Services, Systems Installation and Design, Stairpans, Fiberglass, Lindapter, Trolley, Stainless, Aluminum, Telespar, Unistrut, stairpans

Spring Engineers of Houston manufactures custom springs, compression springs, torsion springs, and springs washers in a variety of metals: brass, copper, titanium, and stainless steel. We are ISO 9001:2000 certified

Free books and documents search with fast and relevant results better than any online library.

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

A friendly AutoCAD

The Design Community web zone is a friendly mini-portal for discussion and mutual support in design, architecture, 3D graphics, community and environmental quality issues.

Desktop Engineering Magazine, Technology for Design Engineering: Mechanical Computer-Aided Design, Computers and Peripherals, Analysis/Computer-Aided Engineering, Rapid Prototyping & Modeling/Reverse Engineering

Building materials, products, and manufacturers on the McGraw-Hill Construction Sweets Network. Download CAD details, specs and green product information.