If you measure the overall dimensions of the door, cut the first block to that size, maybe even add a couple of hinges to it, a latch and a handle. Then possibly a long thin, horizontal rectangle slot somewhere around the middle of this block and cover that with a brass flappy type arrangement. That might work.
If you measure the overall dimensions of the door, cut the first block to that size, maybe even add a couple of hinges to it, a latch and a handle. Then possibly a long thin, horizontal rectangle slot somewhere around the middle of this block and cover that with a brass flappy type arrangement. That might work.