9
PREPARATION
PREPARE THE COVERING
❏ Take time now to thoroughly seal the covering
to the airframe. Areas of covering that aren’t bonded
to the wood underneath—even if you don’t see any
wrinkles now—may loosen and form wrinkles later.
The best way to seal down and tighten all the covering
is to use a covering iron with a protective covering
sock to go over the entire model. Push down on the
iron to bond the covering to the wood. If the covering
bubbles you may be using too much heat or leaving
the iron in one position too long. In some areas,
where the sheeting is soft and there is no supporting
structure underneath, the sheeting may bend inward
making it diffi cult to remove the wrinkles in those
areas. If this happens, use less pressure on the iron
or don’t press down at all. Note: This procedure takes
time. If you don’t feel like going over the entire model
all at once, start with the inboard wing panels fi rst
and do the rest of the parts as you need them.
ASSEMBLE THE WING PANELS
HINGE THE FLAPS AND AILERONS
During construction there will be several occasions
where epoxy cleanup will be necessary. Instead
of wasting whole paper towels, stack three or four
paper towels on top of each other and cut them
into small squares. This will conserve paper towels
and the little squares are easier to use than whole
paper towels. For epoxy clean up dampen the
squares with denatured alcohol.
❏ 1. Test fi t both inboard fl aps to the inboard wing
panels with the large pivot point hinges. Make sure
the fl aps fi t well and pivot smoothly.
❏ 2. Take out the hinges. Add a small drop of plastic-
compatible oil or a small dab of petroleum jelly to the
pivot point of each hinge. Work the oil into each hinge
by pivoting it back and forth a few times.
❏ 3. Mix approximately 1/4 oz. [5cc] of 30-minute
epoxy. Use a piece of wire to apply epoxy into the hinge
holes in both inboard wing panels and inboard fl aps.
❏ 4. Wipe off any excess epoxy from the outside of
all the hinge holes (using your paper towel squares).
One at a time, apply a thin coating of epoxy to one
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