Great Planes Spitfire 40 Kit - GPMA0179 - Manual (Page 23)

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12. Harden the threads in the bolt block with thin CA, then re-tap
the threads after the glue is completely dry.
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13. Bolt the wing to the fuse with the 1/4-20 nylon wing bolts.
Turn the airplane right-side-up. Cut both wing bolts off, leaving
1/4" protruding above the wing bolt block. Turn the airplane upside-
down and remove the wing from the fuse. Set the wing aside.
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1. Glue F1 (the firewall) to the fuse sides with epoxy.
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2. Using 1/4" x 1/4" balsa stick leftover from the stab, cut, fit
and glue a lower gluing stringer from the firewall into F2A and
flush against F2.
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3. Cut one 4-3/4" long sheet from each of the two 1/8" x 3"
x 24" balsa sheets, making two forward fuse bottom sheets.
Lay a bead of medium CA along the bottom of the right fuse
side. Align the trailing edge of the sheet to the leading edge of
the wing saddle in the fuse side (which is approximately 1/4" aft
of F2). Glue the right forward fuse bottom sheeting to the right
fuse side.
Note: This sheeting will maintain the shape of the
wing saddle.
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4. Liberally wet the outside of the right forward fuse bottom
sheeting with an ammonia/water mix to help it bend. Gradually
wrap the sheeting around the fuse bottom. Holding it in place,
use a hobby knife to carefully trim the sheeting so that its edge
is centered on the lower gluing stringer. Apply a bead of
medium CA along the right half of the firewall bottom, F2, and
the gluing stringer. Press the sheeting firmly in place, ensuring
a tight joint with the firewall and F2.
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5. Install the left side forward fuse bottom sheet as you did
the right.
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6. Trim the trailing edge of the forward fuse bottom sheeting
to match the LE of the wing.
Finish the Bottom of the Fuselage
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