It works well and does what it says. You still need some filing and sand paper work on your pieces but once you smoothen it up with isopropyl, you end up with such a smooth and glossy finish. The first time I used it, I had a harder time to make nice builds compared to PLA but once you have the right setup for your printer, it ain't a problem to use polysmooth. I actually prefer printing polysmooth over PLA now.