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First does anyone know what the difference is and which I would use to make a custom sub enclosure and surround for my trunk. Also where I can purchase locally or on the net.

Thanks

 
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Well, I am only talking from what I know about our boat... Fiberglass is the actual fiber, embedded with the resin, while the gel coat is a thick resin (usually color) over the fiberglass. When it chips, you can see the strata of fiberglass & gel coat... Anyway, I have done glass repairs on our sailboat, but, never crafted anything out of it. I would say that you would either have to make a mold for the fiberglass, or create a plywood frame and build it up with glass... hope that helps.

 
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Thanx for the info, getting ready to try and glass my trunk. I was wondering if it is the gelcoat that makes it smooth or is it sanding that does that.

 
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The gel coat will leave a smooth finish and will be more so after sanding. We use a 2-part epoxy paint on our boat that is difficult to apply, but leaves a very smooth, like glass finish. It's called awl-grip and available at most boat supply places... Anyway, I hope that helps. A glass guy at a boat shop should be able to give you all the info you need as they do that stuff all the time..

 
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Thanx for the help man....

 
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gel coat will only be as smooth as the fiberglass unless you pile it on really thick. All gel coat is is like a form of paint put over the product.

~nick~

 
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I would suggest having a shop or friend do your sub enclosure if you have to ask what the difference is. I'm not making fun of you. I'm just trying to save you from a LOT of frustration.