So, yesterday before I read any of these posts I cut it again, this time in pine. I put down a thin layer of resin and glued the fretwork inside the frame as @MarieC mentioned. All went well until I did the second pour about 4 hours later. As I said I hadn't read these posts yet and I did not seal the pine. Sure enough, after about 10-15 minutes, thousands of tiny, milky looking bubbles came from the pine. What I now know as off gassing.
I started the third cutting today, out of my favorite wood to work with, red oak. While I think I might have better results after two miserable failures, I'm not going to use resin this time around. I'm sick of cutting this thing out and don't want to risk it. I cut a piece of plexiglass the shape of the frame and will cover it with that.