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Thread: Fiberglass mold question.

  1. #1
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    Fiberglass mold question.

    For the fiberglass guys out there............................................. ...............I am building 2 fiberglass molds. These are "cheapy" molds and I am not using gelcoat. I spray 4-5 coats of PVA and instead of the gelcoat I brush on a coat of polyester resin. Let it cure. Then I laminate a few layers of 1.5 oz. matt and resin.
    The first mold is made on a auto rear quarter panel that is made entirely of fiberglass. It works out perfect. The second mold is made on a Ranger truck front metal bumper. Not good results here as the laminated layers of resin and mat have attacked the brushed on first coat of resin and lifted it is a few spots.
    The same probucts used, but why 2 different results?
    And the joke is,<br />when he awoke his,<br />body was covered in Coke fizz !

  2. #2
    Senior Member ITALIANKNIGHTRIDER's Avatar
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    Re: Fiberglass mold question.

    do you like this rear Dalford









    NICE 8) ;D 8)
    In the USA if you pay a company / person to start a plug, then it,s your plug and work ,it is not theirs to sell or trade !!

  3. #3
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    Re: Fiberglass mold question.

    Wild car.
    And the joke is,<br />when he awoke his,<br />body was covered in Coke fizz !

  4. #4
    Senior Member ITALIANKNIGHTRIDER's Avatar
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    Re: Fiberglass mold question.

    Quote Originally Posted by Daleford
    Wild car.
    it is a little out there , i do not like the wing
    In the USA if you pay a company / person to start a plug, then it,s your plug and work ,it is not theirs to sell or trade !!

  5. #5
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    Re: Fiberglass mold question.

    I've got the answer. Spoke to my fiberlass supplier rep. It's winter here and so you need to warm everything up before working. I had the heat on and I thought all was fine. However the metal in the Ranger bumper would have not warmed up as quickly as the fiberglass quarter panels. The resin I brushed on never completely cured so the following coats lifted it. That is our theory anyway.
    And the joke is,<br />when he awoke his,<br />body was covered in Coke fizz !

  6. #6
    Senior Member Goldie's Avatar
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    Re: Fiberglass mold question.

    I had a few probs with the weather this week aswell when I was doing a Carbon Fibre panel. The resin was to cold. When I pulled the part it was a real mess with a very thick resin cover on it. If your resin is a little thick before you start mixing then warm put the tub in some hot water to thin it out a little.

    Works a treat then

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