1. Spray primer is great. Use that to paint and then put on stickers.
2. I don't know what I have the 2nd back panel on the machine. I should remove one. Less gaps. Will look better.
3. I'm still on the fence about sanding down the edges. What I really want to do is take a routing table to bevel them. We'll see.
4. With the costs of production and whatnot, I can sell these for $10 - $15 a piece.