# 14.5°, 20° & 25° Pressure Angle Involute Gear CAD Generator

Compare and export 14.5° vintage machine-tool replacement gears, 20° ISO standard drives, and 25° high-load gears with exact base circle math.

## Engineering Geometry & Export Specification
- Ideal for machining vintage South Bend, Atlas, and Myford 14.5° lathe change gears or heavy 25° off-road winches.
- CAD Outputs: 0.005mm AutoCAD R12 `.DXF`, `.SVG`, Watertight 3D Binary `.STL` (4–40mm face + hub boss + bore), and `1:1` Printable `.PDF`.
- Pricing: Free Spec Proof PDF ($0) · Single CAD Pack ($11.90) · Mechanical Engineer Pro ($19.00/mo).
- Live Interactive Workbench: https://gearcadpro.com/templates/20-vs-14-5-pressure-angle-gear-calculator.html