So...  what's so hard about laying up x-number layers of glass between two 
sheets of peel ply on a waxed or otherwise protected flat surface (glass, 
masonite, etc...) and making your own flat panel?  Then you can tune the 
material to exactly the structural specs you a looking for (fiber direction(s), 
weight, layers).

Come on guys.





[email protected] wrote:

>FR4 for circuit boards is not made to be structural.  I have seen a lot
>of boards that are more epoxy than fiberglass.  What you want in your
>structural laminates is more glass and less epoxy.
>
>
>-------- Original Message --------
>Subject: Re: KR> Anyone use FR4 for construction or repairs?
>From: "Tony Wright" <[email protected]>
>Date: Mon, June 25, 2012 5:22 pm
>To: "KRnet" <[email protected]>
>
>Dave,
>
>I have never heard of fr4, but I have used FRP (fibreglass reinforced 
>plywood) in trailer repairs. think this could be used in non-structural
>
>uses.
>
>Tony
>
>--------------------------------------------------
>From: "Dave Acklam" <[email protected]>
>Sent: Monday, June 25, 2012 5:51 PM
>To: "KRnet" <[email protected]>
>Subject: KR> Anyone use FR4 for construction or repairs?
>
>> Fr4 is pre-cured fiberglass sheet made with epoxy resin..... Kind of
>like 
>> a
>> composite version of 1/16 ply..... It's available in :005in and
>up....
>>
>> I'm thinking of using this for some of my larger flat repairs; in
>leiu of
>> laying up glass (eg replacing the pilot side elevator skin)...
>>
>> Essentially, like an unmoulded version of prefab wingskins....
>> _______________________________________
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>
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>
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-- 
Matt Elder
Orangeburg, SC

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