That hatcher looks Great, Donna. It went from an idea to a product much faster than I imagined!
I was going to ask you if all the OSB was completely sealed. That stuff soaks up water like a sponge! I swear it will pull it out of the air, especially if the humidity is high. I had one cabinet I used for some plants (an old store glass display) and it soaked up so much water even under the linoleum I put in there and sealed that I couldn't open the doors!
It is really nice looking, your friend did a great job!
Are you going to use one of your handy-dandy electronic thermostats in there? I finally ordered the same one, the one I got doesn't allow for adjusting by tenths of a degree C, I can only adjust by full degrees so its hard to get it to stay right where I want it. I finally got the Brinsea Spot Check and I can now see how much it varies.