How Smooth Can 3D Printing Be?

We recently had a project where the client needed an exceedingly smooth finish in order to apply a reflective finish. We print in PLA so there is no truly reliable chemical method for smoothing the surface of a print. However, PLA smooths beautifully with a little heat. So we developed a method to smooth PLA prints using heat without warping the print. Here was the result. Does this look smooth to you?