Spur/helical and straight bevel gears created in GearTrax can be modified.
For example, you have a spur gear in an assembly and it was decided to change the tooth profile from a full involute 20-degree pressure angle with a 20-diametral pitch to stub involute with an 18-diametral pitch.
GearTrax can modify the tooth profile, face width and the number of teeth.
Because of the complicated nature of the various involute forms, the tooth will be reconstructed rather than parametrically changed while other features of the gear will be parametrically changed.