5
❏
3. Test the security of all the control surfaces and the
hinges by pulling to make sure they remain secure. Add a
few drops of thin CA to any hinges that aren’t secure.
❏
4. Stack two or three paper
towel squares on top of each
other and cut them into small
squares. During various
stages of assembly these
squares may be dampened
with denatured alcohol for
epoxy and other kinds of
cleanup.
ASSEMBLE THE WING
Join the Wing Halves
❏
1. Use medium CA or epoxy to glue together the two
pieces of the plywood wing joiner.
❏
2. Glue the nylon alignment pin (visible in the following
image) halfway into one of the wing halves.
❏
3. Tape the ends of the servo strings that are inside the
wings to the outside of the wings. Test-fi t the wing halves
together with the wing joiner and the alignment pin. Make
any adjustments necessary for a good fi t.
NOTE:
Even though you may be using 30-minute epoxy,
some brands of epoxy harden faster than others and time
seems to fl y when working time is limited, so make sure you
have everything you need to glue the wing halves together
and work effi ciently so you don’t run out of working time
before the epoxy begins to harden.
❏
4. Mix approximately 1/4 oz. of 30-minute epoxy. Working
quickly, pour some epoxy into the spar cavities in both wings
and distribute with a wire or small dowel.
❏
5. Coat one end of the joiner and insert it into one of the
wing halves. Coat the protruding sides of the joiner and both
root ribs of each wing half. Then, join them together and wipe
away excess epoxy as it squeezes out.
❏
6. Clamp the front of the wing together at the tab and apply
strips of masking tape to tightly pull the wings together. Use
the paper towel squares dampened with denatured alcohol
