Make a fiberglass fan shroud
(→Forming the circular part of the shroud) |
(→Laminating the part) |
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| − | I made a roller out of some threaded rod, a file handle and some 1/4 rod. It works extremely well for rolling out air bubbles in fiberglass. Move slowly, applying enough pressure to roll the air out, but not so much pressure that you move the mat around | + | I made a roller out of some threaded rod, a file handle and some 1/4 rod. It works extremely well for rolling out air bubbles in fiberglass. Move slowly, applying enough pressure to roll the air out, but not so much pressure that you move the mat around or push all of the resin out. Air bubbles look like clear voids, they are easily spotted when you put pressure on them as you can move them around."Dry" spots will show up as white strands of fiberglass that spring up out of the resin. |
| − | You can use a brush, foam roller or your fingers to manipulate the air out. Squeegees don't work well on mat. Commercially made rollers of many sizes and shapes are available from most fiberglass supply houses. | + | use consistant, firm pressure, moving steadily. It works better to pull the roller than to push it. |
| + | You can also use a brush, foam roller or your fingers to manipulate the air out. Squeegees don't work well on mat. Commercially made rollers of many sizes and shapes are available from most fiberglass supply houses. | ||
[[Image:30rolling out the air.JPG|center|600px]] | [[Image:30rolling out the air.JPG|center|600px]] | ||
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[[Image:36corner detail.JPG|center|600px]] | [[Image:36corner detail.JPG|center|600px]] | ||
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| + | Cut your material so that you have at least 1" of overlap onto the previously laid up section. Stagger the layers so you dont create a big lump. A trick that professional glass guys use is to tear the edges of the mat. This tapers the thickness down at the edge, making a smoother overlap. Done correctly and applied while the previous lay up is still workable, you wont be able to tell that the part was made from pieces of matt, instead of 1 continous piece. | ||
[[Image:37sizing up some mat.JPG|center|600px]] | [[Image:37sizing up some mat.JPG|center|600px]] | ||
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[[Image:38more wetting it out.JPG|center|600px]] | [[Image:38more wetting it out.JPG|center|600px]] | ||
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