The sheets of wood are 1/8thick and are 12x24 inches and i needed 6 of them to make this garage. The small square pieces of wood you see on the inside holding everything together are 2 inch sections cut from a 1/2 square dowel rod that was 24inches long. Believe it or not I used crazy glue to attach the square dowel pieces to the sheets of wood. Wood glue and hot glue would work but the crazy glue bounded fast and holds super strong. Plus it didn't require much, just a small dap and it's on there. Now that I think about it, I should have done a "how-to" with step by step pics. It would have make a lot more sense. LOL I'll try and use some of the scrap pieces I have at work today to show you how easy everything can go together.