Join The Wing Panels - GREAT PLANES ElectriCub Instruction Manual

19. Remove the wing from your building board. Use a
razor saw to trim the LE and top and bottom center sheeting
flush with rib W-2 and the LE joiner. Trim and sand the top
and bottom main spars and center sheeting flush with the
side of rib W-1. Sand the TE flush with the tip rib W-4.
20. Sand the top and bottom of the LE and TE flush
with the ribs.
21. Now, go back to step 2 and build the right wing panel.
Remember! Build it over the right wing plan.

Join the Wing Panels

1. Draw a centerline on the die-cut 1/16" ply dihedral brace.
The top of the dihedral brace has a slight "V" shape.
2. Using a razor saw, carefully cut a 1/16" slot in ribs
W-1, just behind the main spar. Trial fit the dihedral brace in
the slots.
3. Sand the bottom of both wing panels near the center, to
remove any excess glue on the spars or sheeting that may
prevent the wing from resting flat on your building board.
4. Assemble the die-cut 1/8" ply wing tip jig and wing tip
jig feet.
5. Trial fit the wing halves together with one wing half flat
on your building board and the wing tip jig under the tip rib
of the other wing panel. Use a sanding bar to sand the
center joint as necessary until the wing halves fit together
without any gap.
6. When satisfied with the fit, apply 30-minute epoxy to
the dihedral brace, main spars and ribs W-1. Do not apply
epoxy within 1/4" of the wing dowel slot in W-1. You need to
avoid getting epoxy in the slot. Slide the two wing halves
together with the dihedral brace in place. With the two wing
halves aligned, use masking tape to hold the wing halves
together. Wipe off any excess epoxy with a paper towel
dampened with rubbing alcohol. Weight one of the wing
halves down flat on your building board, with the other wing
half supported by the wing jig positioned at the wing tip.
Allow the epoxy to cure before moving the wing.
Note: While waiting for the epoxy to cure, let's continue with
assembling the wing tips.
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