THe FF-13 Catbird is designed as a reliable outdoor sport flyer for the intermediate builder. The Catrbird meets the rules for AMA standard class catapult gliders with its 11.5" wingspan and 2.9" chord. The FF-13 features custom designed airfoils, and introduces the builder to the art and science of airfoil shaping. The kit includes templates for sanding and shaping the wing and measurement gauges for setting the dihedral. For the experienced builder this is a fun few hours of building, but what if you've never turned a flat piece of wood into the miracle that is an airfoil? We've got you covered with a detailed 10-page building and flying manual! You'll learn tips and tricks to balsa construction and airfoil making that will serve you well for this project and many others. Catbird!