Make a fiberglass fan shroud
(→Trimming the part) |
(→Finishing the part) |
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After the part has been trimmed and the surface has been lightly ground, with any high spots ground down, and any air bubbles opened up, a skim coat of body filler can be applied. Any good body filler that will stick to fiberglass will work. Scrub a light coat into the surface in 3 or 4 directions before applying the fill coat, this will get the filler into the pores better. The part is still left on the foam and plywood buck because it is easier to handle during the bodywork phase. | After the part has been trimmed and the surface has been lightly ground, with any high spots ground down, and any air bubbles opened up, a skim coat of body filler can be applied. Any good body filler that will stick to fiberglass will work. Scrub a light coat into the surface in 3 or 4 directions before applying the fill coat, this will get the filler into the pores better. The part is still left on the foam and plywood buck because it is easier to handle during the bodywork phase. | ||
| − | + | As this is a one-off fan shroud, special fairing techniques are not employed in it's execution. A DA sander with 80 grit is used in all accessable areas, and hand sanding in the corners is done with 80 grit as well. | |
| − | + | {| | |
| − | [[Image:47skim coat of bondo.JPG|center|600px]] | + | |-valign="top" |
| + | |[[Image:49even more bondo.JPG|center|thumb|Leave the part on the buck for ease of handling.]] | ||
| + | |[[Image:47skim coat of bondo.JPG|center|thumb|Apply a skim coat of bondo.]] | ||
| + | |[[Image:48more bondo.JPG|center|600px|Some areas need another coat to level the surface.]] | ||
| + | |} | ||
| − | + | After sanding with 80 grit, a final sanding can be done with 120. | |
| − | [[Image: | + | {| |
| + | |-valign="top" | ||
| + | |[[Image:50after sanding.JPG|center|thumb|After sanding with 80 grit.]] | ||
| + | |[[Image:51after more sanding.JPG|center|thumb|After sanding with 120 grit.]] | ||
| + | |} | ||
| + | Now the foam buck can be chiseled out. It is very soft and offers little resistance to removal. The wax and PVA that were applied to the buck are making it easy to seperate the foam from the part. Most of it just pops right off, but a blow gun can be used to remove the smaller flakes. | ||
| + | {| | ||
| + | |-valign="top" | ||
| + | |[[Image:52chipping out rocks.JPG|center|thumb|Chiseling out the larger pieces of foam.]] | ||
| + | |[[Image:53most of the foam out.JPG|center|thumb|Most of the foam is now out.]] | ||
| + | |[[Image:55nice and clean.JPG|center|thumb|Nice and clean.]] | ||
| + | |[[Image:56clean inside and out.JPG|center|thumb|Clean inside and out.]] | ||
| + | |} | ||
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As mentioned before, this shroud is going to need to enclose the radiator where the fan swings 1" above the top. This will require a seconary lamination to form a return. | As mentioned before, this shroud is going to need to enclose the radiator where the fan swings 1" above the top. This will require a seconary lamination to form a return. | ||
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