tissue suggestion
If you want to use tissue, have you considered pretreating the material prior to affixing to the airframe?
Make a wooden frame slightly smaller than the size of the tissue sheet, affix with your preferred glue, spray with water as before then use low shrink dope (avalable from model shops) and when shrunk use the main centre area to cover the airframe. (edges will be wrinkly) It should remain flexible enough to affix and will retain its surface rigidity to give the frame additional strength. No extra weight involved and no frame distortion.
regards
Rick.
Biting the hand that feeds IT
