for 3D? little planes?
just whack em out of any light stiff board material - If all you are trying to do is hover - the airfoil is on little (no) consideration.
Or just have em milled from titanium in a thin diamond shaped cross section - or - ferget it .
BTW , huge control surface area, especially the overdone top rudder balances can be adouble edged sword.
One series of composite models has so much counterbalance that the plane can and DOES go into violent rudder occillation.
This is a nasty thing -inherant on pispoor, cobbled together flying stabs /rudders etc..
I have seen models destroyed due to this trait.