There are two print plates (one for the top and the other for the bottom). As long as you keep the sizing equal (if you change one size change the other exactly equally) the top should fit nice and somewhat snug into the bottom (rotate the top if the top doesn't go on easily. This shouldn't be an issue but in case it is it might help the top fit better). I changed the color of the ribbon in the slicer to create the cool contrast. This may require a machine that can do multiple filament colors. Higher infill will make the box more durable. I did 30% on mine.