SDFs don't really work for CAD. You cannot even apply an anisotropic scale without making the distance field non-euclidian, which will render the effect of subs

SDFs don't really work for CAD. You cannot even apply an anisotropic scale without making the distance field non-euclidian, which will render the effect of subsequent operations unintuitive. Extrusion along a path is impractical if not impossible in the general case.