Refinishing a wood dining table depends on its usage and condition. For a heavily used table, refinishing every 3-5 years is ideal to keep it looking new. Minor scratches or dullness may only require light sanding and a fresh coat of finish or wax, while deeper damage might need a full refinish. Regular maintenance, such as polishing and cleaning, can extend the time between refinishings. Signs it’s time for refinishing include a worn or sticky finish, faded color, or surface damage. Always consider the type of wood, as some, like oak, may need less frequent refinishing.