Great Planes Pete 'n Poke 40 Kit - GPMA0493 - Manual (Page 13)

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14. Remove the center-section from the plan. Use a bar
sander with 80-grit sandpaper to sand the bottom sheeting
and the trailing edge block even with the outer ribs.
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15. Sand the top of the trailing edge block even with the
top of the center-section.
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16. Remove the 1/4" x 1/2" balsa sticks you tack-glued
across the outer ribs. Reposition the center-section over
the plan.
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17. Test fit all four die-cut 1/16" plywood wing joiners
and the top center main spar. Note that the “WJ” stamped
onto each wing joiner must be toward the top.
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18. Remove the wing joiners and the top center main spar.
Apply 30-minute epoxy to all joining surfaces and
permanently glue the pieces into position. Wipe away
excess epoxy before it hardens. Be certain the bottom of
each wing joiner is fully contacting the bottom center-section
sheeting.
Refer to this photo for the following three steps.
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19. Glue a leftover 3/32" balsa sheet inside the bottom
center-section sheeting where shown on the plan to
reinforce the opening that will be cut later for the aileron
servo wires.
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20. Cut the center-section sub LE (leading edge) from
the 1/16" x 3/4" x 36" balsa stick. Glue the sub LE into position.
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21. Poke a T-pin through the bottom center-section sheeting
in the center of the holes in the forward wing bolt plate. This
will note where to drill holes later for the wing bolts. Hint: For
the most accuracy, use a 1/4" brass tube sharpened on one
end to cut a circular hole in the sheeting.
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22. Make the aft support blocks by cutting the 1/2" x
3/4" x 9-1/16" balsa block into two 3-13/16" lengths. Make
the forward support blocks by cutting the 3/4" x 1-1/4" x
9-1/16" balsa block into two 3-13/16" lengths.
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23. Glue both aft support blocks to the aft wing bolt plates
and glue both forward support blocks to the forward wing
bolt plates. Shape the top of the blocks to match the top of
the center-section.
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