Great Planes PT-60 Kit - GPMA0119 - Manual (Page 15)

Skip step 12 if you will be using wing bolts!
D 12. Glue the die-cut 1/8" ply front and rear dowel
triplers in position with medium CA as shown in the photos
and on the plans.
16. If you will be using bolts to attach your wing, install
two 1/4"-20 blind nuts in the laminated wing bolt
plate. Use a hammer or vise and thin CA like you did
when installing the blind nuts in the firewall.
D 13. The die-cut 1/8" balsa fuse top has a partially die-
cut score across the width at the wide end. If necessary
deepen the score with a hobby knife. With the score facing
up, align the score with the edge of your work table and
then gently "crack" the wood along the line. Do not break
the part in two. Turn the fuse top over so that the score is
facing down, then test fit the fuse top. Wick thin CA into the
joint between the top, former tabs and the sides. Follow
with medium CA to fill in any gaps.
D 14. Test fit the firewall assembly in the front end of the
fuse. Clean up the edges with a sanding block and 150-grit
sandpaper if required. Use 6-minute epoxy to glue the
firewall assembly into the notches at the front of the fuse
doublers and to the front edge of the fuel tank floor. Be sure
that the bottom lock tab points toward the bottom of the
fuse. Use masking tape or #64 rubber bands to hold the
fuse sides together until the epoxy has cured.
D 17. Use 6-minute epoxy to glue the wing bolt plate into
the notches of the ply doublers and F-3.
D 18. Carefully sand or cut a bevel along the bottom edge
of the notch at the top of the die-cut 1/8" ply windshield.
This bevel will allow the windshield to fit flush against F-2. If
you will be bolting on your wing, F-2A has already been
glued to F-2. In this case you will need to increase the
depth of the notch by 1/8" to allow for the additional former
thickness. Create the bevel after you enlarge the notch.
D 15. Cut two firewall reinforcements from the 1/2" x 20"
triangular balsa stick. The triangular stock fits behind the
firewall, on top of the fuel tank floor. Use 6-minute epoxy
to glue one piece in each corner. Sand the top end flush
with the top of the fuse. D 19. When the windshield fit looks good, glue it in
position with medium CA. Sand the top portion of F-2 (A)
flush with the front surface of the windshield. Sand the rear
windshield overhang flush with the back of F-2.
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