There are several ways to flatten a board. One of the most efficient ways to flatten a board is by using a powered thickness planer, such as the DeWalt DW735x Planer.
Learn more about this planer's features and a couple tips that will help you get the most out of your planer.
Learn more - https://www.rockler.com/learn/How-to-...
Shop for the DeWalt DW735x Planer - https://www.rockler.com/dewalt-dw735x...