There's no doubt that fine wood dust is bad for you. JDS makes powerful, quiet Air-Tech air filtration systems for the home and professional woodworking shops. The superfine fabric collects particles we can't even see, and don't want in your lungs. You'll change your filter less often, and when you do, it's easy as pie with easy access right on the side of the cleanerjust slides right in. It actually took us less than 10 seconds. You'll be impressed when you slide it out and see what it's kept you from inhaling.--Kris Jensen-Van Heste