REPAIR INSTRUCTIONS USING FIBER GLASS MATERIAL
Figure 35. - Sanding Backing Patch
Now determine a method of holding the backing
patch in place (C-clamps, self-tapping screws,
etc.) and trial test the method (Figure 36).
NOTE-If you use self-tapping screws, predrill
the holes. Then before finishing the surface,
remove the screws and fill the holes with
Figure 36. - Attaching Backing Plate
Apply the adhesive to underside of the repair
area and also to the patch (Figure 37). Press
patch in place until epoxy squeezes out from all
Hold backing patch with clamps or screws and
allow the adhesive to harden for the time given in
the manufacturers instructions (Figure 38).
NOTE-If the adhesive Is squeezed into the
tapered groove or hole during bonding, clean
it out before the adhesive sets, and roughen
sandpaper after It hardens.
Steps 20 through 23 apply for large fractures only. For
cracks or small fractures, omit Steps 20 through 23 and
go on to Step 24.
Figure 37. - Applying Epoxy Adhesive
Figure 38. - Cleaning Excess Adhesive From Damaged
While the adhesive is hardening, cut some
pieces of mat to fit into the hole in the panel
(Figure 39). The mat is not a structural
reinforcement, but a filler.
NOTE-Cut enough pieces of mat which when
layered will fill the hole to Just below the
surface of the original panel.
Figure 39. - Cutting Mat For Filler