About this 3D model

My wife asked me to fix electric compost machine. I found the gear on the motor shaft was worn out badly . So I made same one as possible as I could. The tooth wasn't perfect shape but it worked fine and I could finally made my wife happy with my bot. This is the first time that my wife thank to my new toy. I designed this gear by OpenScad as parametric gear ( still learning though). So you may print various gear and pulley.