HEATKEYS

Find free downloads for supplier parts models, component models, 3D parametric models and supplier component downloads, including free CAD drawings, assembly models and full 3D CAD models. Use these free part models by dropping them directly into yo...

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

Air Conditioning, Heating & Refrigeration NEWS site has up to date weekly information that covers all aspects of the ACHR and HVAC industry.

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

PARTsolutions, leading provider of PLM solutions, next generation part catalog management. Delivering over 500 native CAD formats.

Siemens PLM Software’s product lifecycle management (PLM) solutions include digital product development, digital manufacturing and product data management

Find free downloads for supplier parts models, component models, 3D parametric models and supplier component downloads, including free CAD drawings, assembly models and full 3D CAD models. Use these free part models by dropping them directly into yo...

CSI provides design, custom fabrication and distribution of stainless steel products for the sanitary processing industries including food, pharmaceutical and biotechnology

Autodesk User Group International (AUGI) discussion forums.

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections to recommended job candidates, industry experts and business partners.