This is where I beat my head on the wall a bit. I couldn't decide how to design the shelves in a way that would resist the plywood that would be leaning against it. I decided to make it from 2 "walls" connected in the middle to form the shelf and skinned with Masonite for stability. All joints will get wood glue for added piece of mind. As much as I wanted to make a 4 foot high shelf, I think it would be so narrow that it would be wanky at that height. Plus, the cart could get top heavy and potentially dangerous. The cart is 27 inches wide, 54 inches long. I laid some lumber on it and held up a 4x4 piece of Masonite to get an idea of how it would all sit. I decided to make my shelves 20 inches wide, leaving 7 for the ply. It'll store 8 foot pieces of lumber, no problem. The height will be 3 feet, which will make the top shelf 4 feet from Earth.



As I was making the cuts for my cut list, I had the saw set up on the cart and it gave me an idea. The top shelf of the cart will also be the new home for the saw.