Electric Drywall Sander - purchased last winter for Garage Popcorn Removal but did not arrive on time and ended up palm sanding the entire thing on a ladder while being delivered....I should have waited until this arrived because it would have been a lot quicker and easier using this tool. So I had to try it out to see how it works since I always wanted one... I hooked it up to my wet dry vacuum and ran it across three 20-foot taped drywall seams... insane fast ...done in less than 10 minutes - ceiling is now painted and job is complete so I do not need it and is just sitting on shelf - paid $185 with the extra sanding discs only used 1 disc