Sinus Gear

This is an openscad file that creates a 2D spur gear Object.

The gear teeth are generated by using a sinus function to offset the circle. Then this sinus is flattened to some extend.
The radius, amount of teeth, size of the teeth, flattening of the sinus, and resolution are all parameters.

I wanted to recreate a KNex gear for a friend, but I noticed all gear libraries are just circles with some teeth placed on them. I needed notches in the gear. Therefore I made this file to be used as a library. But I purposefully made this library in such a way that it can be used for any Gear project.