A little misleading as the stack-up of the panels pushed the size out to 57" due to paint and tolerance stack-up.
I used 1" pink foam, OSB, and plain pine slabs with knots (because I was using black paint for the pine). Something this big would be outrageously heavy and expensive if made from wood. I did consider facing each black with a veneer piece but the inconsistent stacking of the foam would have made this messy in appearance.
QRDude software was used to find the prime and its associated block heights.
I primed and painted the sheets of foam before cutting to make it easier to touch up later without having to handle each piece and paint each one and set each one to dry all over the garage. In hindsight this would have worked better as the high humidity kept the paint sticky and the individual pieces stuck to each other throughout the process. I don't mean wet paint, but just stickiness that caused a bunch of touch-up as the parts were assembled. I also worried that trying to cover up all the "pink" would be difficult after it was assembled.
Priming wasn't necessary as the latex gray covered well. So there's a shortcut.
