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1. Use a pen to draw a centerline on the die-cut 1/16"
plywood wing plate. Use a sanding bar to bevel the front
and sides of the wing plate to a sharp edge.
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2. Lightly sand the entire wing smooth. Sand very
carefully in the center section area when removing the
excess glue around the center joint (remember, the sheeting
is only 1/16" thick).
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3. Use 6-minute epoxy to glue the wing plate on the top
of the wing, aligned with the centerline and flush with the
wing center TE. Use masking tape or clamps to hold it tight
against the wing sheeting until the epoxy cures.
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4. Read “Fiberglassing Tips” that follow this step. The
included strip of fiberglass tape is used to reinforce the
center of the wing. The remaining fiberglass tape is used to
reinforce the ends of the wing struts. With the wing upside-
down, use thin CA to glue the fiberglass tape to the center
sheeting starting at the TE and working toward the LE. Then
glue the tape on the top of the wing from the front edge of
the wing plate to the LE. Cut off the excess tape.
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5. Use a sanding bar to carefully “feather” the edges of
the glass tape into the center sheeting. Lightly sand the
surface of the glass tape to remove the roughness, but do
not sand through the weave. A light coat of balsa filler can
also be used to blend the glass tape to the center sheeting.
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6. On the bottom of the wing, draw a line 3/16" back from
the aft edge of the wing spar.
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7. Align the die-cut 1/8" ply aileron tray with the line,
centered on the wing joint. Trace around the aileron tray.
Fiberglassing Tips: If you spray a very light mist of 3M
“77” spray adhesive on the center section (only where the
glass tape is to be applied), you can press the glass tape
in place before applying the thin CA glue. Hold the spray
can at least 16" away from the wing and give it just a
short burst. You may also use a piece of wax paper to
press the glass tape firmly down to the wood immediately
after applying the CA.
Finish the Wing
18