Hi, Finished constructing my DIY screen for my first projector tonight, and I'm well chuffed - turned out way better than I could have hoped, not a wrinkle to be seen! However, I want to put an inch-wide mask around the edge, but I'm not sure how best to attach the felt to the screen. Staples feel as though they might reflect too much, and glue seems rather messy. Any tips or suggestions? Cheers!