Nicky, thanks for the reply! It helps! The boards have some twist in them as well. I have a 12" benchtop planer, a table saw, fixed base router and a 10" bench top band saw. The only hand plane I own currently is a wood river block plane. I like the idea of using the router on a carriage assembly to flatten one side, then I can send it through the planer and flatten the other. The boards aren’t wide. The are between 5 and 7.5" wide and about 10ft long. Thanks again, I appreciate it!