Monocote is extremely difficult to put on sheeted surfaces and get a
finish that resembles paint. I have used Econocote (similar, but
thinner than Monocote and requires less heat to activate the adhesive
and shrink the film) to cover many scale R/C gliders with wood sheeted
wings. Wrinkles and bubbles are a problem, plus you can always see the
grain of the wood. The amount of heat required for Monocote is more
than Econocote needs, and will definately melt/delaminate a foam
core/sheeted wing. Then, changes in temperature can make it bubble.
These coverings are good for open bay structures and add strength to
them. Considering the labor involved in an iron on covering vs. paint,
the paint will look nicer longer.
I have been looking at removable paints for contest IDs and found
this - http://www.mobile-colors.com/autohome.asp Alcohol based and
no bleeding or staining (so they claim-will test myself next week).
I've always used "Lift Off 2" for getting adhesive residue off of
gelcoat with great results on composite model, with both foam and balsa
core layups. I believe the problem with using solvents lies in the
foam used. Styrofoam is the worst, but is not used in female
mould/hollow construction by anyone in the model industry.
Bill