5
!
Glue the 1/64” plywood strips to the centermost ribs.
Take special care to ensure that the
plywood is well bonded to the spars.
!
Verify that the top and bottom spars are glued to the vertical spar completely and that there are no
gaps in the glue joints.
!
Lightly sand the wing to remove any bumps and glue
Covering the Wing
The ParkJet kit comes with a clear, paintable covering called Doculam which is actually a laminating
film. The frosted side has a heat activated adhesive. Unlike most coverings, Doculam does not have a
backing sheet. Compared to SoLite (Solarfilm Lite – another excellent choice for the ParkJet),
Doculam is stronger, heavier, and needs a higher temperature to adhere and to shrink. It should also
be painted which will add weight. We will cover one half of the wing at a time.
!
Lay the wing on the table and cut a piece of covering so that it starts at the inner rib of the opposite
wing and overlaps the wingtip and the leading and trailing edges by ~2”.
!
Tack one corner of the trailing edge then the other corner of the trailing edge with a covering iron,
ensuring that the covering is tight.
!
Pull the covering tight and straight then tack the two corners of the leading edge.
!
Tack down the entire leading and trailing edge. Wrap the covering around the back of the trailing
edge and tack it down across the back of the trailing edge.
!
Pull the covering tight across the high point of the wingtip and tack.
!
Tack down the covering to the inner rib.
!
Trim the covering so that there is a 1/8”- 1/4” overlap around the inner rib. Tack down the overlap
to prevent the covering from pulling away when you shrink it.
!
Cover the other side. This side should overlap the other sides covering by at least ¼” to ensure a
good bond.
!
Once both sides of the wing are covered, shrink the covering with a covering iron or heat gun. If
you are using the supplied clear covering, you will need a fair amount of heat to shrink the
covering but too much heat will result in a hole.
