As you can see from the photos I have a problem. What you are looking at is the top to a blanket chest that I am making for my parents. Note the amount of light visible at each corner. It wasn’t like that when I first cut the material, which in this case is 3/4” Red Oak plywood from Home Depot. I cut the pieces for the carcase at the beginning of summer. About a month later I assembled the carcase and set the top aside until I was ready for it. Now, that Christmas is almost here, I am ready to attach the top. I want to make the top flat again but am unsure of how to do it. I’d thought about using a glue up of two 3/4” solid Red Oak to create a beam that would be about 1 1/2” thick, 2” tall, and almost as long as the inside of the carcase. What do you think? Would that be enough to flatten the top so I can attach it to the carcase with a piano hinge?
-- Doug - Make an effort to live by the slogan "We try harder"