Not sure what size cage you wanna make but there are pics of my 4x2x1.5ft cage I built in my gallery... We made these out of cabinet grade plywood from homedepot with a plexiglass front. I put the flexwatt inside the cage and covered the bottom with a thin layer of vinyl... bought a big roll from home depot for like 20$ and its enough to make probably 8 of these cages. If you need any details feel free to shoot me an PM.