eFunda (www.efunda.com): Designed to meet the typical engineers daily reference needs, you’ll find conversion calculators, formulas, material specifications, etc. Focuses on “the basics”—things you know you knew but can’t quite remember now.
The Engineering Toolbox (www.engineeringtoolbox.com): Information and tools applicable to a wide range of engineering and scientific fields, including fluid dynamics, process control and thermodynamics.
GlobalSpec (www.globalspec.com): One of the most complete engineering references available. Links to product specifications, patents, material properties and standards.
Engnet (www.engnetglobal.com): Resource for all things engineering including technical terms, patents, standards and conversion calculators.
Mathworld (www.mathworld.wolfram.com): Described as “the web’s most complete mathematical resource”, it provides a useful way to doublecheck equations and provide support for calculations.
Engineers Edge (www.engineersedge.com): Guidelines for plastic-part design and design for manufacturing among many others.
CAD Tips for Designers (www.3DCADTips.com): Software user tips for CAD, Pro-E, SolidWorks and other design engineering programs.
Online Conversions (www.onlineconversion.com/): As they say on the website, “Convert just about anything into anything else.”
Acronym Finder (www.acronymfinder.com/): Comprehensive dictionary of acronyms, abbreviations and initialisms.
Engineeringtalk (www.engineeringtalk.com) and Manufacturingtalk (www.manufacturingtalk.com): news and innovations from suppliers, manufacturers and distributors.
Mayo Clinic Technology (www.mayoclinictechnology.com):
NASA Technology (technology.nasa.gov):
MatWeb (www.matweb.com): Complete searchable database of material properties and specifications. Includes thermoplastic polymers, thermoset polymers, superalloys, ferrous and nonferrous metals, pure metallic elements and ceramics among others.
3M (www.3m.com/product/index.jhtml): One of our largest and most reliable suppliers, 3M provides a plethora of information on their thousands of products on their website, from adhesive to “Zeeospheres TM Ceramic Microspheres”.
Institute for Electrical and Electronics Engineers (www.ieee.org): All kinds of technical information and forums for engineers and designers to connect with one another.
Specialty Graphic Imaging Association (www.sgia.org): Provides information and educational opportunities to switch producers, buyers, industry suppliers and OEMs.
American Society of Mechanical Engineers (www.asme.org): Source for information impacting the mechanical engineering community, as well as conferences and other education opportunities.
Underwriter’s Laboratories (www.ul.com): Testing agency for product safety compliance.
Mil-Spec Standards (www.everyspec.com): Free resource to find Mil-Spec Standards.
FDA (www.fda.gov/MedicalDevices/default.htm): Provides a variety of helpful tools for medical device manufacturers including information on standards and current industry issues.
ASTM International (www.astm.org): One of the largest voluntary standards development organization. Resource for technical standards for materials, products, systems and services.
IPC (www.ipc.org): Standards referenced for PCB specs.
How Stuff Works (www.howstuffworks.com): Explanations of how just about anything works from the human body to complex machines.
