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Modeled as per the following instructions:http://grabcad.com/questions/how-to-model-involute-gear-in-solidworksSuitable for modeling profile cut gears for CNC profile cutting (Laser, water jet). NB: Not for high precision applications - The tooth profile is not a true involute, it is a very close approximation.Please edit equations to change module, no. of teeth etc.Please see other module if a gear with a large no. of teeth is required.