Here is a pic. It's cracked and far from flat, but it's not that bad given my meager means (water and rubber bands). There are a few things I can try next.
I would love to see a picture down the centerline, it looks better than I figured.
While it's common to see wood fail in tension, it's a lot easier to stretch it than to compress it. I think most guitar builders have more problem with compression than actually breaking due to too much tension