HEATKEYS

HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

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

Scratch: a programming language for everyone. Create interactive stories, games, music and art - and share them online.

eFunda, the ultimate online reference for the mechanical engineering community

Advertise and reach a broad-base audience of gear industry professionals and buyers with Gear Solutions magazine -- the complete online resource for the gear industry. Media kit available at Gear Solutions.

MathWorks is the world’s leading developer of technical computing software for engineers and scientists in industry, government, and education

We are the leading supplier of metric Spur Gears, Helical Gears, Spiral & Striaght Bevel Gears, Miter Gars, Ring Gears, Screw Gears, Gear Racks, Worms & Worm Wheels, Ratchets & Pawls, Involute Splines, and related gearing items.

Helping us make and share calculations with MS Excel. XLC software to display MS Excel formulae in mathematical notation. Repository of solved problems covering many engineering topics. Site forum for software support and discussion of calculation. E...

AmTech International is a supplier of transmission gears, shafts, machined parts and assmeblies to many of the leading O.E.M. companies around the world. The purpose of our web site is to give our potential clients a glimpse of the type of component...

The new home of Hadland.net

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