fiberglass repair

Old 10-17-08, 08:02 AM
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fiberglass repair

What is used to fill in the deep scratches in fiberglass in order to get it ready for paint. Bondo, epoxy, what. I only want to do this once, and want to come out with a good long lasting job. Therefore I do not want to use the wrong product that my just vibrate out. This is for saddle bags on motorcycles.

And when priming fiberglass is their a special type primer used or is it basically the same as metal priming.

Old 10-17-08, 12:38 PM
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I've used fiberglass in automotive applications but don't know if there would need to be any extra precautions for your application. Generally, bondo is used to finish the repair [lightly sand the fiberglass first]. Another coat of fiberglass/mat can be applied before the bondo if extra strenght is needed.

Most primers will adhere well to fiberglass/bondo so I would let whatever topcoat is to be used, dictate which primer to use.
Old 11-06-08, 02:02 PM
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fiberglass repair

small scratches can be filled with bondo, but I would prefer fiberglass resin. it will bond to the glass and become part of the fender/door, etc.. sand first and clean with a good fiberglass cleaning agent to remove dirt and fingerprints.

the primer needs to have a flex agent in it if it is a moveable part that will flex in use.

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