Hi folks. I'm going to be building a large box (about 18"x18"x12") with removable bottom and top that will be used both for storage of an antique music-box Christmas tree stand and for displaying the stand (with small artificial tree) on to serve as a sounding board. The sounding board will be redwood, and I'm thinking of using redwood for the box sides as well. For musical purposes, it was recommended to me to have the sides be only 1/2" thick. My concern is whether that would be robust enough for a box of that size, structurally. Thoughts?