Ok, so I ordered all the material from McMaster this morning. The original post states the following measurements:
54 inches long by 16-1/2 inches deep and 21 inches high
So should all my cuts be based on these? Meaning, cut as described, or cut a bit less and have the overlap of material stacked/butted make up some of the length? (specifically in the 16.5" cuts) Does that make sense? It does in my head, but who knows...