Behold the Travel Towel, 15″ x 15″ x 3″ of totally destructable towel goodness.
The basic idea is that the blue foam folds down with the elvons folding back onto the surface. You will notice that the elvons have 45 degree cuts that keep the shap square.
Also, the elvon control horns have to be mounted on the bottom which means that the credit card horns have to be very long.
I have quick releases on the control horn side of the push rods.
The coroplast deck is cut so it folds up and over the deck, then a nylon screw joins the foam and deck hinged parts which have
opposite hinging. It is stiff enough to fly.