Quote Originally Posted by Voicecoil View Post
I wouldn't worry about polar coordinates, I've designed and machined/had machined a number of horns from 3D models on normal 3 axis CNC without any problems; some (for tweeters) that needed quite fine and accurate details. Much quicker and easier to go with hardware that's easily available and let the CAM software do the work IMHO.
Yeah, I've sorta come to the same conclusion since I posted :)