Im repairing a cracked fiberglass cowl - RCCanada - Canada Radio Controlled Hobby Forum
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Old 12-08-2006, 03:12 PM   #1
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Im repairing a cracked fiberglass cowl

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Im repairing a cracked fiberglass cowl. Im not sure what kind off resin that was used, it seems to be a yellow color on the inside. Does any body know what kind it is? I know the repair has to be the same kind of resin or it wont stick, Also once I repair the cowl I would like to repaint it, is auto paint fuel proof? Thanks.

Did you hear about the man that fell into the upholstery machine? He's fully recovered.
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Old 12-08-2006, 05:06 PM   #2
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It's probable just polyester resin... Cheap stuff... you need to get some MEK hardner too.. Also you can buy glass tape in various widths (1"-4") it's easier to use than cutting strips from a big piece...
Just be sure to sand the area ( inside of the cowl) your going to fix (glass), you need to get the wax off before you glass it..
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Old 12-08-2006, 07:39 PM   #3
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Do not use polyester resin. If the cowl is made with epoxy resin the polyester will not cure when laid on. epoxy will kind of stick to polyester. As you do not know what the cowl is made of use epoxy any way. Clean the inside with degreaser, wash with soapy water, scuff up with rough sandpaper. Lay on a layer of epoxy and cloth. On the outside fill cracks etc with epoxy and microballoons. Sand smooth, prime, paint.

Two part automotive paints are fuel proof.

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Old 12-08-2006, 08:08 PM   #4
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When sanding the inside of the cowl you can easily tell by the smell if it is polyester or epoxy.

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