Great Planes Profile 38 - GPMA0487 - Manual (Page 10)

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5. From the 1/4" x 1/4" x 30" [6mm x 6mm x 762mm]
and 1/8" x 1/4" x 24" [3mm x 6mm x 610mm] balsa sticks,
cut and glue ribs to the leading and trailing edges.
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6. Remove the rudder from your building board. Inspect
all the glue joints and add CA to any joints that don’t look
strong. Fill any gaps with balsa sanding dust and a drop or
two of thin CA. Use a bar sander to sand both sides of the
rudder flat and even.
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7. Return to step 2 and build the second rudder.
Start by building the left wing panel upside-down over the
left wing panel plan so your progress matches the photos.
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1. Match the four 1/8" x 1/4" x 24" [3mm x 6mm x 610mm]
basswood main spars so any warps will counteract each other.
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2. Cover the wing panel plan with waxed paper or Great
Planes Plan Protector.
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3. Glue two of the die-cut 3-ply W-3 ribs together.
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4. Glue the die-cut 3/32" [2mm] balsa W-3B ribs to
both sides of the aft end of the W-3 rib.
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5. Position one of the main spars over the plan. Align
the end of the main spar with the outboard edge of rib W-7.
Build the Wing Panels
BUILD THE WING
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