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SolarWorld USA manufactures and installs high performance solar panels for homes and businesses.

MidNite Solar is the industry leader and manufacture of quality Renewable Energy System electrical components and E-Panels.

1-800-398-4147 Unistrut Service Company of Ohio stocks genuine Unistrut metal framing products; design, engineering, & installation also available.

Worlds largest machinist, CNC and manufacturing forum

Architectural information on building materials, manufacturers, specifications, BIM families and CAD details.

All-aluminum, full-sized flashing with stainless steel hardware. Installs faster than any other flashed solar PV mounting. Works with all standard racking systems. Made in USA and Canada

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

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

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

A blog by an Autodesk employee covering many topics from Autodesk, AutoCAD, 2D, 3D, CAD, Design, DWG, Technology, Travel, and much more.

CAD Blocks FREE! Download FREE CAD Blocks from a variety of categories and CAD disciplines. Browse before you download as all of our CAD Blocks have detailed thumnail views!