Columbia Coronado 25, Owenrs Manual

Page: 97 / 115

SECTION 6
Page 17
6.3.1 (continued)
2. Clean the area with a white cloth saturated in acetone.
C. Cutting the Fiber Glass Patch
1. Cut pieces of fiber glass mat to build up the sanded area.
Cut the first piece to the size of the lowest point of the
sanded area and continue outward with other pieces for an
adequate buildup. The last piece of mat should overlap the
others about 1/4 inch.
2. Build up the sanded area about 1/8 inch above the top to
allow for shrinkage of the resin. Press the pieces of dry
fiber glass mat firmly in the area with your hands to insure
a sufficient buildup. If there are any low spots add more
pieces of mat.
IMPORTANT
Fiber glass mat will not maintain its thickness when wet out with resin.
That is why it is so important to press the pieces of dry mat firmly into
the area with your hands to insure a sufficient build-up.
3. Cut a piece of fiber glass cloth that completely
overlaps the built-up patch about one inch.
D. Wetting Out the Patch
1. Mix resin and catalyst thoroughly with a stirring
stick to prevent uncured spots. Follow the resin
manufacturer's directions for proportions.
2. One at a time, place each piece of fiber glass mat on a
piece of cardboard and apply the catalyzed resin ("wet
out") with a paint brush. Saturate the pieces of mat
thoroughly and work out air bubbles with the paint brush
before applying the pieces to the sanded area. Using the
cardboard prevents resin from draining into the sanded
area being repaired.