reinforcement of biofoam wing?

[B.karthik]

i am constructing a glider made from biofoam which is flexible and weak in structure and i have made wing of 30cm from that foam.now i should make it stronger by reinforcement with any strong material.what are the choices?

[Mokele]

You could use wooden or metal spars along the length of the wing, either driven through the center or around the edge.