Finishing Techniques - Columbia Coronado 25 Owenrs Manual

6.4

FINISHING TECHNIQUES

NOTE:
It is recommended that small areas be finished with gel coat because the
color and texture of the surrounding surface should be matched. For new
surfaces, it is best to obtain the gel coat in the original color from the
manufacturer of the part being repaired. If for any reason matching gel coat
is not available, obtain a gel coat that matches the surrounding color as
closely as possible and, if necessary, shade the gel coat with polyester
paste colors to more closely match the surrounding color.
Suction spray gun
White cloth
100, 400, 6 600 grit wet
6 dry sandpaper
Masking tape
Sanding block
Paper
Stirring sticks
Buffing pad
heavy duty polisher
B. Preparing the Surface
1. Prepare the surface as instructed in Section
6.2.1.
2. After the area has been thoroughly sanded and feathered, apply
masking tape. Where possible, place the tape on a sharp break or
contour adjacent to the area. This technique minimizes slight
color or texture differences after spraying.
NOTE:
Mask a large enough area so that you will not have to spray closer than 2
inches to the tape. If you spray up to the tape, a thick lap line that is
difficult to remove will result.
3. It is of extreme importance to sand and feather evenly to the
tape after it has been applied. If you don't, the gel coat
overspray will not bond, and peel-back or flaking will occur.
TOOLS MATERIALS
Gel coat
Catalyst
Acetone
Polyvinyl alcohol (PVA)
Buffing compound
Water
SECTION 6
Page 31