Insert the hinge all the way to the fold.
Install the control surfaces leaving a 1/8-inch
gap at both ends of the aileron. Apply two
drops of thin CA to the all the tops of the
hinges, followed by two drops on the bottom.
Material is supplied to seal the hinge line
between the ailerons / flaps and the wing.
This not only adds strength to the hinge line,
it also increases control response.
To perform this step a covering iron should
be used, however a laundry iron will work if
it can reach a temperature of 300 degrees.
Start with the aileron, select a long piece of
trim covering and cut to size.
Remove the backing and tack to the wing at
one end. Pull it tight and tack at the other
end.
Allow the aileron to hang off the edge of the
table and secure the strip to the wing. Go
slow and avoid bubbles, should a bubble
appear puncture it with a pin.
With the aileron still hanging start from the
center and draw the iron down the aileron
sealing and tightening the covering.
Now lay the wing flat on the table with the
aileron level. Use the side of the iron to seal
the crease at the hinge line. Repeat for all
control surfaces.
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