A three-sided box, open at the top, accommodates file dividers indexed by sandpaper grit size, to permit easy access and retrieval.  As sheets are inserted, the entire stack of sandpaper moves upward, and is self-leveling.  Dividers keep a weight on the sandpaper to prevent curling.  Standard size sheets, half sheets, and discs may be stored.  Partially used sandpaper, too good to throw away, may be re-inserted for later use.  The box, called the "Sand Box," may be used on the bench or hung on the wall, and it is portable and may be carried to the workplace.  A lot of 5,000 of the Sand Boxes has been previously sold on the marketplace.  Production drawings are available.