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Spur Gear Generator

A true involute spur gear, previewed live and exported as SVG for laser cutting or as a profile to extrude. Two gears mesh if they share module and pressure angle.

Parameters
Module = pitch diameter ÷ teeth. Common modules: 0.5, 1, 1.5, 2. Pressure angle is almost always 20°. Bore is the center hole.
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