A&A sign board

I had some corrugated sheet plastic left over from the WBB project and used it for the A&A sign board that the letters will attach to.

The plan is to place a light box behind the letters that'll shine through the opening in the sign board and light up the letters. I cut the opening with a 5mm border, but after thinking a little more about this structure I'm going to cut it back to 1mm. I think that'll be sufficient for getting the letters and their supporting structure securely attached.