When using iron-on films, (something I haven't used on a stunt model since the 60's!) do you dope or seal the airframe first? I've been doping the the airframe on a radio scale model that is being covered in solartex (coverite type material) that will eventually be painted. The covering seems to stick better than on bare wood, I use 2-3 coats of thin dope sanding in between, never tried it under glossy film though!

Cheers     Neville

Neville, you should seal up the nose at least, I use thinned finishing resin or epoxy. Other then that, I don't worry about it, as long as all your joints are lapped and well sealed, it'll keep the oil out.

I used to seal the wood, but I now just use Balsarite or Stix-it painted only on the areas where I iron the covering to the frame.  I've never found a covering that will stick well to bare wood.  If you prefer to seal the wood, such as around the engine area, Balsarite can be used over wood sealed with just about anything.  I've used epoxy, Minwax (both urethane and acrylic), Mod Podge, Elmer's glue, Kilz, and thin CA.  All worked well, but probably only added weight.  Have fun.

Paul