cracking where fibreglass panel grafted to metal panel - Hot Rod Forum : Hotrodders Bulletin Board
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Old 11-21-2002, 09:43 PM
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Red face cracking where fibreglass panel grafted to metal panel

I have grafted a fibreglass forward half of a fender to the metal back half, the pieces joined mid wheel. Metal and glass are stepped and pop riveted,glued and glassed over, they continue to crack in the joints. Once I jacked up the car and the joint cracked. It has justed cracked in normal use I have repaired this many times and have had them pro. repaired, they still crack

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Old 11-22-2002, 06:34 AM
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This union will never work. The metal and fiberglass shrink and expand at different rates.
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Old 11-22-2002, 06:44 AM
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Both materials flex differently, there will always be cracking because you can't join the two any stronger than a rivet and glue. and as Wills 41 says, the expansion will differ. Dan
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