Polytec Resurfacing Technique - SeaDoo Spark Care And Repair

On the outside surface ONLY: Fill the groove until it is slightly beyond
flush with the original surface.
On the inside surface ONLY: Continue until the welding joint covers
3x the groove width on each side of the crack and is the same
thickness as the material itself. When in doubt, go wider.
7) Sand the weld to remove excess material. Using a fingernail,
check the joint between the weld and the hull for defects. If neces-
sary, groove the defect and apply another layer.
TECH TIP
A common defect is the formation of an air pocket somewhere in the joint. Check for these bubbles
or waves between layers as you go along. When in doubt, sand away a small amount of the area
in question to verify.
Note: A hole can be repaired using the technique described
above. Use a piece of Polytec to block the hole; the hole and/ or
the piece may need to be trimmed to fit. A piece of Polytec left
over from a scrap part may be used if needed. Temporarily
secure the piece in place using aluminum tape. Follow the
procedure for Plastic Welding on a crack; treat the junction
between the two parts as the crack.
On the outside surface, perform the Polytec Resurfacing technique on
Finishing
the repair and surrounding area. The result should be a flush surface.
This technique is useful to repair a minor scuff or scratch as well as to improve the color,
texture, and transition following a repair. Practice on nonvisible areas before attempting.
Using a crimped cup wire brush in a circular pattern, buff away the scuff or apparent
scratch. This should be done locally at first, at a lower speed while applying some pressure.
Once the scuff or scratch appears to be filled in, buff outward in a circular pattern, applying
less pressure at a higher speed. A reasonably smooth transition zone should become
apparent. Continue the process while increasing speed, decreasing pressure and switching
from c.w. to c.c.w. until the texture of the buffed area is acceptable. Optionally, blur away
the transition area with a flaw repair coating for plastics, or with spray paint for polypropyl-
ene. Spray sparingly from 12 inches (30 cm) away onto the affected area.

Polytec Resurfacing Technique

Transition area in work.
7
7
Step 7