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PTC develops cutting edge product lifecycle management (PLM) tools, 3D design software, and dynamic publishing solutions. Find out why the most innovative companies choose PTC.

The largest resource for MCAD (Mechanical Computer-Aided Design) professionals, including files, forums, jobs, articles, calendar, and more.

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

IEEE Xplore. Delivering full text access to the world

Ameridrives Couplings is a leading international manufacturer of mechanical power transmission products.

Power-Core gears, track rollers, plastic guide rollers, cam followers

Canadian Center of Science and Education (CCSE) is an independent organization delivering supports and services to education and research in Canada and the world.

Learn how to do just about everything at eHow. Expert Village is now a part of eHow, adding expert How To videos to eHow, the world

This is a discussion forum used to discuss the FIRST Robotics Competition.

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...