HEATKEYS

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

3D models for CAD/CAM/CAE designers. Cars, cities, airplanes and other polygonal and NURBS/SOLID models.

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

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.

Kartbuilding Blog: Regular Tips & Information on Building Karts

Dassault Systèmes SolidWorks Corp. develops and markets 3D CAD design software, analysis software, and product data management software. SolidWorks is the leading supplier of 3D CAD product design engineering software.

3DVision Technologies Corp. supports the vision of engineers globally With solutions for the design and manufacturing industries including SolidWorks, 3D solid-modeling, computer aided analysis, product data management and 3D Printers.

Academia.edu helps academics follow the latest research.

MiniBuggy.Net: The Ultimate Off-Road Buggy Community

SolidWorks & Inventor video training tutorials on your computer. Learn SolidSorks Inventor and Excel and gain professional skills.

Build a go kart, mini bike, mini chopper, and more plans. Forum for discussion.

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