Someone else has probably done this already but I' m new to this site. I have a black hole that wasn' t stopping arrows very well anymore so I made a wooden frame around it. I made the two side sections about 1" -1 1/2" smaller. I used a ratchet strap and a pipe clamp to compress the foam so I could screw it together. It worked very well, now I don' t need to go buy another one.