Great Planes Extra 300S 60 Kit - GPMA0236 - Manual (Page 8)

You may remove the stabilizer and elevator drawing from
the wing plan by cutting along the dashed line. Don’t forget
to cover the plan with a Great Planes Plan Protector so the
glue won’t stick to the plan.
❏
1. From the 3/16" x 1-1/2" x 24" balsa sheet cut down to
15". Use a ballpoint pen and a draftsmen’s square to
accurately mark the centerline of the 15" balsa sheet stab
LE doubler. Use your pen to make a mark on each end of
the doubler 15/16" from the LE.
❏
2. Use a straightedge to draw lines connecting the
centerline of the stab LE doubler with the marks on the
ends as shown in the photo.
❏ 3. Use a hobby knife with a sharp #11 blade to cut along
the lines you drew. If necessary, use a bar sander to true
the leading edges you just cut.
❏
4. Use the plan as a guide to mark and cut the bevel on
both ends of the stab LE doubler.
❏ 1. See the Expert Tip that follows, then glue three 1/16" x
3" x 30" balsa sheets together. This will be cut in half
lengthwise creating the sheeting for the stab.
HOW TO JOIN SHEETING
A. Use a metal straightedge as a guide to trim one edge
of both sheets.
B. Use masking tape to tightly tape the two sheets
together joining the trimmed edges.
C. Turn the sheet over and place weights on top of the
sheet to hold it. Apply thin CA sparingly to the seam
between the two places, quickly wiping away excess CA
with a paper towel as you proceed.
D. Turn the sheet over and remove the masking tape,
then apply thin CA to the seam the same way you did for
the other side.
E. Sand the sheet flat and smooth with your bar sander
and 150-grit sandpaper.
Make the Stab & Fin Sheeting
Make the Stab Leading Edge Doubler
BUILD THE TAIL SURFACES
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