Scale Aviator International Magazine Issue 3 - Page 94

heat gun to help remove the material. With a little heat, the covering came off easily. You will have to use an Xacto knife to get the corners and tight spots, but with enough heat the covering will lift and come off. Always pull the covering back towards itself and cut areas so you can remove large pieces. After the wing covering was removed I wiped it down lightly with lacquer thinner to remove any residue adhesive. Then a light sanding with 400 grit sand paper using it carefully really smoothed the surface. The leading edge of the sample wing was damaged as you can see from the red circle in Photo #4 5 I sprayed the backside of the .010” (.25mm) sheeting first and then the top of the wing. I let both of these surfaces dry until I could touch them with my finger and they were just slightly tacky. Basically the adhesive was almost dry. I laid the sheet on to the exposed wing carefully starting from the front and slowly pulling it towards the rear. Once the material was applied, I weighted it down and left it to dry overnight. Photo #5. I repaired what I could, but without cutting in a new piece, this was going to be as good as it gets. The sheeting covered the ding nicely and I found that you really do not need to spend a lot of time repairing these as long as a rib is not crushed and the damage is not too large. I had intended to wrap the leading edge with this material, but that proved a bit difficult and I would 6 recommend the .007” (178mm) thinner material to wrap the leading edge. After drying thoroughly, the sheeting had bonded firmly and the wing started to look pretty good. This photo shows the covered wing, and the other wing panel with even more damage marked with the red circles. Photo #6 The sheeted wing above the stripped wing shows the material applied. Note that I also covered the aileron with the material and the flap underneath the aircraft. Once I had applied Fliteskin to the top and bottom of both wings, I glued the material as far as it would go over the leading edge. I trimmed it at that point and then filled it in with balsa and ZAP PT 40 resin coating for a hard sealed surface. Now it is time to prime the wings. The wings primed easily and no additional surface preparation was required with the exception of wiping them down of any adhesive or other material. 4 94