Make a fiberglass fan shroud
(→Laminating the part) |
(→Laminating the part) |
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| − | Here are a couple of troubleshooting pictures. | + | Here are a couple of troubleshooting pictures. In the first picture, the white streaks and crosses are the result of a slightly stressed part, this one was from the laminate being in the sun and curing too fast in that spot. It is the resin shrinking and pulling the fibers apart that causes that appearance. The second picture shows some air bubbles, in the center-right of the pic, and a resin rich area. The fibers are almost floating on the resin, and the appearance is one of shiny, glossy pure resin,w ith a very low reinforcement ratio. The air shows up as misshapen, somewhat opaque objects in the laminate. On an exterior body part, air bubbles would not be acceptable. In this case, it's just the underside of a fan shroud, so it will work just fine. The air bubbles can be ground out, and filled. |
| − | + | The third picture shows another shot of a resin-rich area, and the fourth picture shows a proper resin/reinforcement ratio. Note how the laminate has a dull finish, with the fibers at the surface, but with no dry areas. The fibers should have a somewhat "flattened" appearance -- this indicates a tight rollout. | |
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| − | + | |[[Image:41slightly stressed from shrinking too fast.JPG|center|thumb|Slightly stressed from shrinking too fast in the sun.]] | |
| − | + | |[[Image:42close up of resin rich and air bubbles.JPG|center|thumb|Air bubbles, and a resin-rich area.]] | |
| − | [[Image:42close up of resin rich and air bubbles.JPG|center| | + | |[[Image:43resin rich.JPG|center|thumb|Resin-rich area.]] |
| − | + | |[[Image:44good resin glass ratio.JPG|center|thumb|Proper resin/reinforcement ratio and rollout. | |
| − | + | |} | |
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| − | [[Image:43resin rich.JPG|center| | + | |
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| − | [[Image:44good resin glass ratio.JPG|center| | + | |
===Trimming the part=== | ===Trimming the part=== | ||
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