Lexan = Good but expensive. I found a 4 x 8 sheet sitting in my basement, 1/8 of an inch thick. Perfect for the box I'm making. PVC will work, Lucite will work, HDPE (High Density Polyethylene) is ideal as well, cheaper than lexan, also gets the job done. Don't use Cintra. So far, not one person on this site has given any useful information as to where to buy puckboard, which is most likely made of one of the materials I mentioned anyways.
'Thanks for ripping off my friend. He has a magnum.' - SkogenJake