It’s enough to make a grown man cry …. refinishing a pre-finished hardwood floor is no laughing matter. The amount of sandpaper required to sand a pre-finished floor is ridiculous and the pain of burning through all this paper is joined by the endless hours of back-breaking work that’s required to complete one of these floors. A regular site-finished floor would have literally used 2 belts and a few circular papers, unfortunately… the factory finished applied to this floor is bulletproof and kills the paper within a few passes. This could possibly the last pre-finished floor we ever sand …. we hope !