So, if you coat and finish them, would you do it prior to assembly or afterwards?
My procedure would be to first glue the pieces to each other, then glue the backplate - this way I can make it really fit to the mm.
I guess best would be to spray it at the end. How do you avoid finish collecting between the pieces? I never did it, so the question might seem stupid...
Also what kind of wood as the back? I would want to mill it, as I have an idea how to mount it without screws.