Originally Posted by teslahed
I used 5mm EPP and reduced dimensions slightly to produce a smaller wing with good results. I ran a length of 4mm diameter carbon fibre tubing up each of the bits of foam used to shape the airfoil and another peice to run between them creating an A shaped frame of carbon fibre. This resulted in a wing both stiff and strong and weighing just under 9 oz all up (although only 24" wingspan).
I've uploaded a short video of me flying this wing to youtube if anyone is interested;