Great Planes Tutor Park Flyer Kit- GPMA0002 - Manual (Page 9)

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8. Cut one of the 1/8" x 24" [3.2 x 610mm] hardwood
dowels so that it fits in the notches at the front of the wing
ribs, from the root to the tip rib.Save the leftover dowel for
the fuselage. Glue the dowel to the ribs.
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9. To make a top trailing edge sheet, draw a line
1/16" [1.6mm] from the edge of a second 1/32" x 3/4" x 24"
[.8 x 19 x 610mm] balsa sheet. Sand a taper along the edge
up to the line. The sheet should fit in the notches at the
trailing edge of the wing ribs and blend into the bottom
trailing edge sheet. Hint: To avoid breaking the trailing edge
sheet when sanding the taper, sand across the grain, not
lengthwise.
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10. Glue the top trailing edge sheet to the top of the
wing ribs and the bottom trailing edge sheet.
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11. From a 1/32" x 3/4" x 24" [.8 x 19 x 610mm] balsa
sheet, cut and glue shear webs, horizontally, to the top and
bottom spars in the locations shown on the plan. Make sure
they are glued securely to the wing spars and ribs. Do not
install shear webs in the rib bay between the W-1A ribs.
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12. From a 1/32" x 3" x 15" [.8 x 75 x 380mm] balsa
sheet, cut pieces to make the top center sheeting to fit
between the wing spar and trailing edge sheet and between
the wing spar and the leading edge dowel. When satisfied
with the fit, apply medium CA to the top of the W-1A ribs and
press the sheeting in place.
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13. Carefully sand the top center sheeting flush with
the wing spar, leading edge dowel and trailing edge sheet.
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14. Use the wing tip brace pattern on the plan to make
the wing tip brace from leftover 1/16" [1.6mm] balsa. Glue
the wing tip brace into position.
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