HEATKEYS

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

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

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

A comprehensive description of technical functions for each Lego Technic set. Includes photos and animations.

CADTutor provides free video tutorials, articles, downloads and a busy community forum for users of AutoCAD and associated software.

Youtube to Animated GIF, Create animated GIFs from YouTube videos easy and FREE. Simply copy and paste the URL into our form, and click Create to get started.

Ducati Monster Forum: Discuss all Ducati Monster motorcycles both new and old, join today!

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest quality video in the universe.

Paul Nylander?s Home Page

Prezi is the zooming presentation editor

Consulting on gear design and development. Gear design software. Worm, worm face, hypoid, spur, helical gears, plastic gears, variable ratio rack.

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