Did not operate for me, It is not easy to see where you're scraping with the bag on. I produced a bigger mess of my ceiling, the blade is so large whenever I tried to scrap I set gouges during the ceiling. I known as the amount to return it, http://louiseczvs.collectblogs.com/19582739/a-review-of-popcorn-ceiling-removal-tools-and-material-with-asbestos