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weight of fiberglass vs mdf

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=36416
Printed Date: May 14, 2024 at 4:46 PM


Topic: weight of fiberglass vs mdf

Posted By: 2002sportside
Subject: weight of fiberglass vs mdf
Date Posted: July 29, 2004 at 4:29 PM

How much weight does using fiberglass instead of mdf save?  I'm trying to build a box where weight is sort of a factor and am trying to decide if fiberglass is worth the trouble...




Replies:

Posted By: xtreamcc
Date Posted: July 29, 2004 at 5:36 PM
fiberglass boxes weigh about 1/2 less than an equal size MDF box. Some competition fiberglass boxes can weigh just as much though as they will have 14+ layers of glass. But if ur looking for a standard box for regular subs then fiberglass will save you weight.

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Posted By: lilboi
Date Posted: July 29, 2004 at 8:41 PM
i think it's more like 1/4, it's very light. have you picked up a carbon fiber hood and compared it to a regular hood. It's pretty much like that.




Posted By: xtreamcc
Date Posted: July 29, 2004 at 10:47 PM
ur probably right lilboi, my guess was based more on a standard box with an MDF base, a full fiberglass box is much lighter, probably around the 1/4 mark like lilboi said.

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"Shiny chrome when used in conjunction with bikini models is particularly effective in inducing brain deficit disorder"

02 Jeep Grand Cherokee

Monster System on its way.




Posted By: lilboi
Date Posted: July 29, 2004 at 11:01 PM
BUTTTTT.... first thing to know about fiberglass is that it is not sturdy if you create one big flat surface. If youre thinking about forgetting MDF all the way, your box is going to crack. You need MDF side/top/bottom pannels in order to have a box. IF you think you can make a skeleton out of wood then fiberglass the rest of it, you'll end up with touble. The only time you don't need mdf is when you're molding it to the side walls (where there are curves).





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