Resources

eMachineShop CAD

FREE CAD Download
Browser CAD (Beta Release)
CAD Help Guide
CAD Video Guide
CAD Design Wizards
CAD Lessons
How to Design a Part
Key Techniques
How to Use Z Values
Designing a 3D Part
Designs with Multiple Constaints
How to Change Views

Engineering

Reference Charts
Metal Gauge Chart
Wire Gauge Dimensions
Unified Thread Standard
Calculators
Shipping Crate Calculator
Dynamic Flywheel Balancing Calculator
Classic Mechanisms
Flywheel
Scotch Yoke
Pendulum
Watts Linkage
Locking Clamp
Overrun Clutch
Scott Russell Linkage
Ratchet Wheel
Geneva Escapement Wheel
Universal Joint
Intermittent Motion Device
Rack and Pinion

GD&T

Tolerance Definitions
Angularity
Position
Circularity
Profile of a Line
Concentricity
Runout
Cylindricity
Straightness
Flatness
Symmetry
Paralellism
Total Runout
Perperdicularity
Coefficient of Friction
Rolling Friction
Concepts
Axis
Feature-of-Size
Bonus Tolerance
Full Indicator Movement
Control
Max Material Condition
Datum
Median Points
Datum Target
Tolerance Stack
Feature
GD&T Rules
Symbols
GD&T CAD Symbols
CAD Electronic Symbols

File Viewers

STEP File Viewer

Miscellaneous

Pad2Pad Printed Circuit Boards