Routers fairwell

A tricky job is planing the wedges of wood for the back and the sides and then planing them flat once the two sides of the bookmarked pieces are glued together. I was shown what someone had used in a previous year. It was a piece approximately 3 by 4 feet with a wooden U shape attached in the middle. The U shape comprised of long pieces of wood with narrower strips glued down the middle of each so that they formed a step. Depending on what you were planing you would screw one of the pieces down at the relevant place. This was on such a huge baseboard so that you could clamp it down without the plane hitting the top of a clamp.
Simple idea, but needed some work.
Here is my baseboard about to have some channels cut into it.
After 3 channels my router died.
Most annoying.