I have never dealt with the process of adding fiberglass layers to plastic. I have a suit of sintra armor I bought specifically to play airsoft in. I've heard that with fiberglass resin and such, the plastic will harden enough to not tear apart or get riddled with holes if shot with bb's. Is this true? If not, what can I do to make this plastic hard as a rock? Any advice will be appreciated.
*average FPS of airsoft guns being used where I play is 350-450