A python script for making involute gear STL models.

From the command line execute a command like this:

python InvoluteGear.py 12 20.0 6.0 gear.stl

The first parameter is the is the number of teeth, the second is the pitch diameter, the third is the thickness of the gear, and the forth is the name of the output file.

Additional options can be used to control the bore size (--BoreDiameter), the hub size (--HubDiameter, --HubWidth), the pressure angle (--PressureAngle, default 20.0 degrees), and how fine the involute surface is with (--StepCount, default 10 steps).