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Engineering Reference

The links below are some of the handy tools and resources I have found over the years.  Let me know (email me) if you have any sites or companies that you use so I can add them!  I like to keep this as my home page so I am only one click away from where I need to be.  Enjoy, and feel free to share!
Calculators
Beam Calculator
Bolt Torque Calculator
Cross Section Properties Calculator
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Hertzian Contact Stress Calculator​Ideal Gas Law Calculator
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Press Fit Force Calculator
Shaft Fit / Tolerance Calculator
​Shaft Key Calculator
Stress Concentration Calculator
​Unit Converter
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Wide Flange I Beam Prop Calculator
Ref Tables / Guides
Aluminum Extrusion Design Guide
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Coefficients of Thermal Expansion
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Delta PT Screws for Plastic
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Engineering Formulas
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Friction Coefficients
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Galvanic Corrosion Chart
GD&T Reference
​Injection Molding Guide
​Injection Molding Snap Fit Guide 1
Injection Molding Snap Fit Guide 2
Injection Molding Snap Fit Guide 3​
Material Properties
Ohm's Law
​O-Ring Back-Up Ring Dim Ref
​Parker O-Ring Design Manual
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Pipe Thread and Diameter
​Poisson's Ratios
​Shaft / Hole Fit Tables
Sheet Metal Bend Radii
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Wrench Clearance Chart (Open End)
​Wrench Clearance Chart (Closed End)
Weld Symbols
Weld Symbol Details
Bolts and Hole Info
Internal Thread Dims
External Thread Dims
Hex Head Markings
​Drill & Tap Chart
Drill Sizes
Miscellaneous Tools
Pantone Color Finder
​WeTransfer
Suppliers
​American Science & Surplus
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​American Urethane
DigiKey
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formlabs
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Grainger
IGUS Plastic Bushings
Lee Spring
​Master Bond
McMaster-Carr
Mouser
MSC
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Online Metals
SDP/SI
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Smalley Wave Springs
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Smooth-On
​Strapworks
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Super Magnet Man
​Robot Shop
Rapid Prototyping

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Dinsmore
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Fathom
Fictiv
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GoProto
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​ProtoCafe
ProtoLabs
Rapid
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Xometry
Zoom RP
Videos
Thought Bomb Design 
How to use Calipers
Heat Set Threaded Inserts
Is Mechanical Eng right for you?
Design
Eric Strebel Channel
David Kelley 60 Minutes Interview
"The Deep Dive" IDEO video 
Engineering / Science
The Mechanical Universe
Plastic Ball Valve Design Study
Engineering Guy Channel
AvE Channel
Machining
How to Square up Stock
How to use an Edge Finder
How to Find the Center of a Hole
​Tom's Techniques Channel
Machining a Moka Pot
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  • Services
  • Testimonials
  • Experience
  • Design Philosophy
  • Contact
  • Engineering Reference