The airplane is a .15 size sport plane.......looks like one of the big pattern planes w/ inverted engine and a bubble canopy.
The canopy is about 11" long and 2" wide and quite flexible til it was guled in place. I'd estimate the thickness as a little less that 1/32".
The cowl was a little thicker, I think I may have used four layers, and made it stronger because it's just held in place with three screws. In my experience, how things are mounted has a lot to do with how strong they need to be.