This is my second sander of this type and has replaced another and less useful product. I like to have two sanders, each with a different type of sandpaper. When my old and less desirable grinder broke it wasn't difficult to buy a second one. I now have two of the best grinders I have ever used. They are very easy to insert and hold the paper very well. With this mill you can easily cut entire sheets of paper. Another great thing is that you end up with very little unused sandpaper when using this sander. Breaking my old mill really wasn't that bad.