D/L #papercraft unskinned, framework airplanes:

Download + build your own papercraft unskinned (framework only) Polikarpov I-16, Me-109 and S.E.5 airplanes! (by Salvador Ortega Cabrera)

http://twitter.com/ninjatoespaper/status/205956534658801664
http://salvadorortega.webcindario.com/