Has any one cut Oak?

I’m new here trying to figure out a few things can you only cut sheets of things? Or if I built a ledger board on the top and the bottom so that the router will have a flat surface can I put a piece of oak in between them and route out some oak?

This topic got caught in the spam filters. I approved it, but not before @Scornell re-posted it in projects. So I’m going to lock this one and refer everyone to the other one. Has anyone cut oak?