I've done some basics with OpenSCAD and it does well, but as soon as I want to do anything that isn't just a bunch of extruded polygons I run into trouble. Also

I've done some basics with OpenSCAD and it does well, but as soon as I want to do anything that isn't just a bunch of extruded polygons I run into trouble. Also the lack of chamfer and fillet functions is frustrating, even though I know I can use a custom function someone else wrote I don't like not understanding the math behind the code.