Its a vacuum moulded fuse which is made up of ( John correct me if i'm wrong) 3/4 oz cloth, 1/16th balsa, 2oz cloth sandwich. the wings are balsa sheeted foam core, bassicaly your typical pattern wing. this model is amazingly strong from what i've seen (Half throttle snap in a verticle downline![X(]). I'll try and get some more pictures of the progress, but certain things like school and composite arf extra's tend to get in the way of much progress[8D].