Page 203 2
nd
Edition – Rev 0
51-20
DAMAGE CLASSIFICATION AND REPAIRS – MAINTENANCE PRACTICES
When using inserted patches to repair holes in plastic structures, trim the holes to a
perfect circle or oval and bevel the edges slightly. Make the patch slightly thicker than
the material being repaired and similarly bevel its edges. Install patches in accordance
with figure below.
Heat the plug until soft and press it into the hole without cement and allow to cool to
make a perfect fit. Remove the plug, coat the edges with adhesive, and then reinsert in
the hole. Maintain a firm light pressure until the cement has set. Sand or file the edges
level with the surface, then buff and polish.
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