HEATKEYS

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

CAD (Computer-aided design) Siemens NX design of mechanical engineer projects

TurboCAD Forums - Index

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

Thingiverse is a universe of things. Download our files and build them with your lasercutter, 3D printer, or CNC.

The Ultimate Discussion forum for CNC, metal working machines, lathes, vertical milling, CAD/CAM software, hobbyCNC, wood routers, EDM, electronics,metal work and Free Buying and Selling!

OTHERPOWER.COM - A resource of information and materials for alternative power sources

The KidWind Project is a team of teachers, engineers and scientists committed to innovative energy education. Our goal is to promote the elegance of wind power through affordable tools and training programs that challenge, engage and inspire students...

Fieldlines.com: The Otherpower discussion board - Index

We can’t tell you how pleased we are with our home since we worked with you to make it healthier and cutting our monthly electric bill in half. We thought we needed a new A/C but our home is now…Read more ›

YouTube is a place to discover, watch, upload and share videos.