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Thread: Fiberglass Question

  1. #1
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    Fiberglass Question

    I've been searching on how to use fiberglass, and found a video by 3M on fiberglass repairs.
    According to it, in order to create a fiberglass part ready to be painted, I would need:
    - Polyester Resin
    - Hardener
    - Body Filler
    - Primer Filler
    And since I'm making a mart and not repairing something:
    - Release Wax

    Is that correct? Is there something I wouldn't need? Would I possibly need something else?
    Thanks!

  2. #2
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    Acetone to clean everything, and possibly some actual fiberglass might help too.
    I bleed styrene, bathe in acetone, and sparkle like a Cullen in the sunlight.

  3. #3
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    Yeah, dont forget your fiberglass mat. Also, you will need sandpaper. 40-60 grit for shaping, 150 for smoothing out and taking scratches out and 220 to get ready for primer.

    Also a sanding block so you will have flat surfaces.

    A Dual action sander if dont want to do it all by hand.

    Cheap paint brushes 30 for $8 at harbor freight. Use these to apply the Resin.

    The mould of the actual part you are going to make.

  4. #4
    Senior Member ncrazyballa's Avatar
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    you need resin, matt, gelcoat, brush, roller, and acetone for clean up.

  5. #5
    Senior Member MacGyver's Avatar
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    Add gelcoat to the list as well. Make sure you get the hardener for the resin. You use the same hardener for the gelcoat. You may also need to pick up a fiberglass roller to get the air bubbles out.

  6. #6
    Junior Member Rebelervi's Avatar
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    Quote Originally Posted by xengs View Post
    I've been searching on how to use fiberglass, and found a video by 3M on fiberglass repairs.
    According to it, in order to create a fiberglass part ready to be painted, I would need:
    - Polyester Resin
    - Hardener
    - Body Filler
    - Primer Filler
    And since I'm making a mart and not repairing something:
    - Release Wax

    Is that correct? Is there something I wouldn't need? Would I possibly need something else?
    Thanks!
    A plug is usually required if you require a mold, although sometimes its possible to fabricate mold from wood/filler, or alike.

    Plug for rear custom seat:
    Name:  PlugsPlugsExample3_zps13afe0c9.jpg
Views: 136
Size:  37.9 KB


    In addition:
    Eye protection.
    Eye wash.
    Breathing protection.
    Protective clothing/footwear.
    Syringes/Retail quality scales (I use 1% ~ 3% catalyst # Temp'/Pot life, weigh polyester , add catalyst by volume, although there are variations)
    Gloves, throw away, and re usable.
    Choppings/chopped strand/strands, for corners.
    Different from chopped strand matt, which comes in variations, I use 600 and split using thinner layers at first.
    Thermal properties of mold are worth considering, as are the working temperatures of any article.
    Also prefer to add color/pigment to Gelcoat, as it just seems to spread easier.
    Quality brushes for Gelcoat, or there is a spray system.
    Metal rollers are the bizz for larger/flatter areas.
    Mixing pots/ mixing sticks.
    If your shaping fiberglass, glass bubbles can added.
    Protective plastic sheeting/sticky tapes/blu tack/ card etc.
    More info:
    Buy fiberglass and composites supplies online UK - East Coast Fibreglass Supplies

  7. #7
    Senior Member dman1409's Avatar
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    Latex gloves!! LOTS OF THEM! and a suit maybe... unless you want to be able to put your trousers strait up in a corner when your done... Lol

    And get 2 contrasting colours of gelcoat... 1 for the mould, 1 for the product.... I take black and white... This enables you to ensure you covered the entire mold in gelcoat..

    Cheers
    Last edited by dman1409; 06-16-2013 at 07:41 PM.

  8. #8
    Quote Originally Posted by ncrazyballa View Post
    you need ... and acetone for clean up.
    right acetone to clean materials and tools, use vinegar if some resin gets in your hands, acetone will enter in your blood (not good)

  9. #9
    Senior Member dman1409's Avatar
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    What I alwas find anoying is the strands sticking to your fingers when there is some resin on them...

    Any tricks to prevent that?!? Appart from keeping your fingers clean... Lol

  10. #10
    Senior Member MacGyver's Avatar
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    Quote Originally Posted by dman1409 View Post
    What I alwas find anoying is the strands sticking to your fingers when there is some resin on them...

    Any tricks to prevent that?!? Appart from keeping your fingers clean... Lol
    I usually have a wet rag of lacquer thinner in case I need to wipe my fingers off. I find that I rarely use Acetone. I almost always use lacquer thinner.

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