Quiz: What is the purpose of using a sanding sealer prior to finis June 29, 2025 by Sander Johnson What is the purpose of using a sanding sealer prior to finishing wood? Discover more about Sanders and Sanding at our home page. A) To give the wood a darker color B) To make the wood more resistant to fire C) To fill in the wood grain and create a smoother surface D) To prevent the wood from absorbing too much finish Submit Answer