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6.3.5
(continued)
4.
Place the cardboard firmly over the hole, with the
cellophane between the hole and the cardboard.
5.
Secure the cardboard over the hole with masking tape.
IMPORTANT
To restore the strength to the damaged area, the cardboard must be placed
flush against the hole. Areas that do not come in complete contact with the
cardboard will be structurally weak.
NOTE:
The cardboard serves as a backing against which the patch on the
outside of the structure can be applied. (Step 6 below).
6.
Return to the outside of the structure and patch the hole
as instructed in Section 6.3, Procedures
IMPORTANT
Omit Step 3 (cleaning patch with acetone) of Procedure G in Section 6.3
for now.
C.
Repairing Inside of Structure
1.
Remove the piece of cardboard and cellophane from inside of
the structure.
2.
with the power sander and 24 grit sanding disc, remove enough
of the fiber glass from the area so that at least two pieces of
fiber glass patching material can be applied. Following the
general instructions of Section 6.3, Procedure C, sand outward
about 2 inches on all sides from the patch that you have
applied from the outside of the structure. Complete both Steps
1 and 2 of Procedure C in Section 6.3.
3.
Patch the hole as instructed in Section 6.3, Procedures
through G.
IMPORTANT
Select the layers of patching materials according to the type of fiber glass
visible on the inside of the structure (see Section 6.3.9, Procedure C, Step
2).
SECTION 6
Page 23
D
through G.
D
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