GREAT PLANES Super Sportster 90 Instruction Book page 7

2. Glue the two rudder fillers (RF) together
using thick CA glue, making one piece 1/4"
thick.
3. Using a razor saw, cut pieces of 1/4" x 3/4"
balsa (from the 36" sticks) to make the rudder
framework. Working right on the plan, glue
these pieces together along with the ply RF
piece, using thin CA glue.
4. From the 1/8" x 1/4" x 36" sticks, cut "ribs"
to fit between the rudder framework, and glue
them in place. NOTE: It is not necessary to
get these ribs in the exact position shown on
the plan.
5. After the glue has completely set, remove
the rudder assembly from the plan and using
a T-bar sander or a sanding block with coarse
grit sandpaper, sand the outside edge of the
rudder to the approximate shape as shown on
the plan.
6. Examine the rudder framework and add
thick CA glue to any open joints, then use your
T- bar with medium grit sandpaper to sand
both sides of the rudder framework smooth.
7. From the 1/16" x 3" x 36" balsa sheets, cut
four pieces 12" long. Edge glue these pieces
together in pairs, using thin CA glue, to make
two sheets 6" x 12". Sand the surfaces of these
sheets smooth, using a T-bar with medium to
fine grit sandpaper.
8. Lay the rudder assembly on top of one of
your 6" x 12" sheets. Hold the rudder assembly
down and apply thin CA glue along the edges
of the framework and ribs.
9. Sand the edges of the 1/16" sheeting flush
with the edges of the framework.
D 10. Apply thick (slow setting) CA glue (or 30-
minute epoxy if you need more time) to the
rudder framework and ribs, then lay the other
6" x 12" balsa sheet in place. Hold the sheeting
in place with your hands or with books until
the glue has set.
D 11. Sand the edges of the sheeting flush with
the edges of the framework.
12. Carefully draw a centerline all around the
edges of the rudder.