CAD for Spiral Cam

[Ether]

Originally Posted by chmorroni

I would assume (from a blurb that I saw of a previous thread) that there is some kind of equation to make this.

...I would like the radius to change evenly over the entire circle.

Spirals are easy to draw if you use polar coordinates. Just make the radius "r" be a function of the angle "t".

You can make r change linearly with t (if that is what you meant by "change evenly"), or any other function of t, like polynomials or exponents etc.