Materials MatWeb, Material Property DataStandard Tap Drill / Clearance HolesThe Engineering Toolbox Professional Organizations American Iron and Steel Institute (AISI)American Institute of Aeronautics and Astronautics (AIAA)American Society of Professional Engineers (ASME)American Society for Quality (ASQ)ASTM International – Standards Worldwide (ASTM)American National Standards Institute (ANSI)International Organization for Standardization (ISO)Institute of Electrical and Electronics Engineers (IEEE)National Institute of Standards and Technology (NIST)National Society of Professional Engineers (NSPE)Society of Automotive Engineers (SAE)The Professional Association for Design (AIGA). Unit Conversion Tools OnlineConversion.comCurrency Calculator 3D ModelingPrototypesDraftingConcepts2D to 3D Data ConversionElectronic HousingsWeldingMaintenance SupportSheet Metal Fabrication Previous Next Why Rigid Concepts? Here is why you should do business with us! FULLY ENGINEERED SOLUTIONS We can design products from a napkin sketch through production ATTENTION TO DETAIL We evaluate designs for accuracy and optimize for manufacturing CUSTOM PROTOTYPES We work with most physical mediums to build prototypes (metal, plastic, castings, assemblies, welding, etc); we can help with most projects MANUFACTURING We offer manufactured parts and fully assembled units Ask about starting a project