The body is gonna be made entirely out of cardboard im trying to keep the cost as low as possible, I'm using cardboard rolls from Lowes, they are like $30.00, I've used an entire roll so far for the front (like 25') I'm having a hard time stiffening the cardboard, I'm thinking PVA and water brushed in layers might work, but I haven't tested it yet, any ideas? I would really appreciate it if anybody has any suggestions