Styrofoam, Deflection, and Treatment

[mathwurkz]

Hi I am in a competition where I have to use the deflection of a polystyrene beam to launch a projectile. Styrofoam is rather brittle but it is the only material we are allowed to use (it's cheap). I have a geometry all set but I was wondering if there is any possible way to treat the styrofoam so that I can make it less brittle and get much greater deflection?

 

[brewnog]

Doubtful. If you're only allowed to use styrofoam, then you're only allowed to use styrofoam. Laminating it might be an option if you are allowed an adhesive?