Will fiberglass resin destroy MDF?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=17691
Printed Date: May 19, 2024 at 10:23 AM

Topic: Will fiberglass resin destroy MDF?

Posted By: fishing
Subject: Will fiberglass resin destroy MDF?
Date Posted: August 16, 2003 at 9:07 PM

Will brushing fiberglass resin on MDF destroy the MDF? Its wet? If you get MDF wet won't it expand?

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Replies:

Posted By: Big Purds
Date Posted: August 16, 2003 at 9:19 PM

no, it doesnt hurt it at all...in fact, there are alot of people who swear they get anywhere from a tenth of a db to 2 or 3 db more out of their enclosures for having done this...

I havent yet tried this in any of my installs, because I usually do the pods before the boxes, and am too lazy to mix up another batch of resin for the sub box...but the theory is stiffening/strengthening the box, and it is reasonable IMO that this could work...I dont know about extraordinary gains, but I could see maybe up to 1 db out of a box that was properly built in the first place...

Posted By: JamesRH
Date Posted: August 16, 2003 at 9:28 PM

does not damage the mdf in any way, however fiberglass seems to fall off mdf after drying, they do not stick together very well. it wont make the mdf expand cause its alot more dense that water so it cannot seep into wood like water can.

Posted By: fishing
Date Posted: August 17, 2003 at 9:11 PM

Thanks for the great info. Saved me alot of time and money!

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Posted By: MAXST
Date Posted: August 17, 2003 at 9:16 PM

What about useing felt and the resin..then carpet it?

That would work right?

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Posted By: Wherm
Date Posted: August 19, 2003 at 10:39 PM

resin won't separate from the mdf unless you go really thick. a thin layer from the fleece or mat onto the wood helps to hold the structure together. that's always worked for me.

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