Polyurethane Foam

Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=36892
Printed Date: May 15, 2024 at 1:53 PM

Topic: Polyurethane Foam

Posted By: cornfedmancow
Subject: Polyurethane Foam
Date Posted: August 06, 2004 at 1:41 PM

Any helpful hints on using polyirethane expandable foam to create a mold around which one would fiberglass?

Driving a 2002 Elantra GT Fast Back and I wanted to FG a custom sub enclosure in the corners of the hatch to save space for stuff (specifically, my 11 month old sons stroller). Has anyone done so in a similar situation? If so any hints or guidlines to doing so? I thought of getting the FG DVD for $50 bucks, but $50 is $50.

TKS

Cornfed

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Eagles may soar - but weasles don't get sucked into jet engines.

Replies:

Posted By: vdubmk4
Date Posted: August 06, 2004 at 4:35 PM

That might be a good idea. My only concern would be after the layers of glass are applied to the foam mold cause the finished product would be fairly thicker and might not fit nemore.

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Fortune: You will continue to take chances, and be glad you did.

Posted By: cornfedmancow
Date Posted: August 06, 2004 at 4:41 PM

Your right, I guess I would have sand down the foam prior to laminating the foam with FG! Good point. I will also probably have to cut the FG to get the foam out unless I were to leave one end open.

Then what? Do I form the woofer mount off the existing FG shell?

TKS

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Eagles may soar - but weasles don't get sucked into jet engines.

Posted By: vdubmk4
Date Posted: August 06, 2004 at 4:48 PM

I would most definitely do the fiberglassing in two sections, like a back half and a front have if ur gunna go the foam route. And make sure to make a mounting ring for your sub and i guess you could just attach to the foam somehow then do ur glassing over it. Make sure ur rub wax or sometin over the foam though so you can get the glass off easier. and the to put the front and back back together glass the seams good.

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Fortune: You will continue to take chances, and be glad you did.

Posted By: elts_drac
Date Posted: August 08, 2004 at 7:16 PM

Cover the foam in Vizqueen and spray it with a release agent.

Posted By: cornfedmancow
Date Posted: August 09, 2004 at 11:16 AM

Thanks,

Yeah, I got a hint from Tim Rightnour about the "heat" that will be set off by the foam and that I should do it in 2 or 3 smaller layers of foam to prevent the palstic from melting. He also said to use 2-3 layers of foil to keep it from heating up the metal too much. Who knows, I may just glass it w/o the foam.

Anyone in Phoenix want to help?

Corn

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Eagles may soar - but weasles don't get sucked into jet engines.