Refinishing gelcoat

Solarfilm does not adhere as easily to fibreglass or resin covered surfaces
as it does to balsa. The adhesive soaks into the balsa surface to form a
very good bond but not into the resin. To overcome this the manufacturers
recommend using a coat of " Prymol" first in order to etch the surface
before applying the Solarfilm.

DB


tango4 wrote in message
...
John,

The application of heat, a little more than the average hairdryer
delivers,
both shrinks the film and activates a quite powerfull adhesive that is on
the underside of the film. The adhesive is strong enough to remove the
surface of underlying balsa structures when trying to remove the film to
repair an RC model..

I'll have a word with Jim Hammerton and see if he'll let us try it out on
the Ventus ( which has some surface cracking )

Ian



"John Galloway" wrote in
message ...
Bill Daniels wrote:

'I read several years ago about an aircraft finishing
system that involved an
thin film that was heat shrunk onto metal skins covering
joints, rivets and all.'


To take Bill's point further, if the film could not
be shape changed somehow then there is no way you could
get span length roll of film to fit tightly to the
curves of a glider wing along its full length.

John Galloway