Top Flite TOPA0405 - Manual (Page 43)

area (the shims used to simulate the thickness of
the fillet bases in earlier steps should be removed).
Bolt the wing firmly onto the fuselage. Check to
make sure the wing fits properly along the wing
saddle, making adjustments as needed.
❏
4. With the wing bolted to the fuse, glue the
wing fillet bases to the wing saddle.
NOTE: The wing fillet may be built up with small
balsa blocks and triangle stock, or you may use
the technique described below.
❏
5. From the 1/16" balsa sheet cut a tapered
fillet sheet to fit between the fillet base and the
fuse side. Test fit it against the wing saddle and
trim to fit. A little concave curvature on the side
that contacts the wing fillet base helps. You may
need to make a few braces to fit under the fillet
sheet especially toward the aft end of the fillet.
❏
6. Glue the balsa fillet sheet in place starting in
the middle and working toward each end. The angle
of the fillet should be approximately 45Þ from the
middle forward and flatten out toward the aft end.
❏
7. Apply HobbyLite filler to the fillet. Trowel it on
with a spatula. Wet your fingers with water and use
them to contour the filler.
❏
8. Turn the plane over and build the small fillet
on the bottom side of the fillet base behind the wing.
❏
9. Allow the filler to dry completely. It may take
overnight, depending on the thickness of the filler.
❏
10. Use cylindrical sanding tools to final shape
the fillet. Remove the wing and clean up the edges
of the fillet. Wick thin CA into the joint of the fillet
base and the wing saddle from inside the fuse.
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