HEATKEYS

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

VEX Robotics Design System

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.

eMachineShop is the remarkable new way to create the custom metal parts and plastic parts you need. Custom CNC Milling, Turning, Waterjet Cutting, Laser Cutting, Injection Molding

Academia.edu helps academics follow the latest research.

Find free downloads for supplier parts models, component models, 3D parametric models and supplier component downloads, including free CAD drawings, assembly models and full 3D CAD models. Use these free part models by dropping them directly into yo...

Ondrives.US is your discount source for miniature mechanical parts. You get the only 24 month guarantee! Unique Hi-Tourque gear boxes save you space. Get Dowel Pins, Flexible Shaft Couplings, Precision Shoulder Screws, Retaining Rings, Shafting, Shaf...

Demag Cranes & Components

FIRST designs accessible, innovative programs that build not only science and technology skills and interests, but also self-confidence, leadership, and life skills.

GlobalSpec is a search engine and information resource for the engineering, industrial and technical communities. We help you quickly find industrial parts, specifications and services.

Silverfish Longboarding is a longboard skateboarding magazine with Longboards, Reviews, forums, articles, photos, and tip tricks, the ultimate resource for Concrete Wave, Downhill Skateboarding, Slalom and Sliding