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<div>Mike,</div>
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<div>Deformation temp of 5 minute is usually very low, on order of 100F. I no longer use 5 minute for anything load bearing.</div>
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<div>You are correct on sunlight degradation for the amine cured epoxies (most of the stuff we use) but the process is fairly slow. Usually don't have to worry about that as RVP pointed out, unless you are like me and keep your planes for 8-10 years plus</div>
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<div>For much better sunlight protection there are other curing systems (J Greer) available but these are slow curing and could be counteproductive for your purposes</div>
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<div>MattK<br>
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<div style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: arial,helvetica">-----Original Message-----<br>
From: Michael S. Harrison <drmikedds@sbcglobal.net><br>
To: 'General pattern discussion' <nsrca-discussion@lists.nsrca.org><br>
Sent: Tue, Sep 13, 2011 11:52 am<br>
Subject: Re: [NSRCA-discussion] 5 min expoxy<br>
<br>
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<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: ">Thanks Ted and others. This is all helpful, my concern is what I have witnessed over many years as the heat and fuel ruined the 5 min epoxy. Since it is electric, fuel is not an issue but there is plenty of concern about heat. I don’t know the deformation temp of the epoxy nor the exposure to normal environment so that is why I was asking. I am going with the 5 min and doing a thin coating of laminating to have a seal and redundancy. Sunlight will eventually ruin the epoxies but since it is inside the fuse, that is not an issue. </SPAN></div>
<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: ">Thanks</SPAN></div>
<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: ">Mike </SPAN></div>
<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: "> </SPAN></div>
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<div class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: ">From:</SPAN></B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: "> <A href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A> [<A href="mailto:nsrca-discussion-bounces@lists.nsrca.org?">mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B>On Behalf Of </B>Ted Sander<br>
<B>Sent:</B> Tuesday, September 13, 2011 6:54 AM<br>
<B>To:</B> 'General pattern discussion'<br>
<B>Subject:</B> Re: [NSRCA-discussion] 5 min expoxy</SPAN></div>
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<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: ">I tend to use whatever the local shop carries – but do lean toward Z-poxy. The current Pres. Of our local club spent his career formulating adhesives, so I trust his opinions, and in his view all hobby marketed expoxies are far stronger and longer lasting than we ever need, so go with price. That said, longer curing is stronger than shorter curing (but once you are good enough, do you really need it stronger?) and using laminating is better than thinning with alcohol, acetone, or whatever if you need to coat an area…..(thinning does dramatically reduce strength).</SPAN></div>
<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: ">If you are getting into whole plane fabrication with epoxies (glass/composite construction, etc.) then you need to do some more research for thin film strengths, viscosity, etc. , especially since weight becomes a big factor. But for general gluing of firewalls, wing halves, or the like – go with what you can easily get/afford.</SPAN></div>
<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: "> </SPAN></div>
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<div class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: ">From:</SPAN></B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: "> <A href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A> [<A href="mailto:nsrca-discussion-bounces@lists.nsrca.org?">mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B>On Behalf Of </B>Michael S. Harrison<br>
<B>Sent:</B> Monday, September 12, 2011 2:31 PM<br>
<B>To:</B> 'General pattern discussion'<br>
<B>Subject:</B> Re: [NSRCA-discussion] 5 min expoxy</SPAN></div>
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<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: ">Thanks,</SPAN></div>
<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: ">Ted what was the brand you used?</SPAN></div>
<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: ">Mike </SPAN></div>
<div class=MsoNormal><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: "> </SPAN></div>
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<div class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: ">From:</SPAN></B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: "> <A href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A> [<A href="mailto:nsrca-discussion-bounces@lists.nsrca.org?">mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B>On Behalf Of </B>Ted Sander<br>
<B>Sent:</B> Monday, September 12, 2011 1:51 PM<br>
<B>To:</B> General pattern discussion<br>
<B>Subject:</B> Re: [NSRCA-discussion] 5 min expoxy</SPAN></div>
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<div class=MsoNormal>You'd just be adding weight. I have 20 yr old planes where the 5 min is still perfect. Enough heat to be a problem with the epoxy will be a much bigger problem for everything else in the plane!</div>
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<div class=MsoNormal style="MARGIN-BOTTOM: 12pt">Ted Sander<br>
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On Sep 12, 2011, at 11:57 AM, "Michael S. Harrison" <<A href="mailto:drmikedds@sbcglobal.net">drmikedds@sbcglobal.net</A>> wrote:</div>
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<div class=MsoNormal style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN style="COLOR: #1f497d">Thanks Dwane,</SPAN></div>
<div class=MsoNormal style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN style="COLOR: #1f497d">Sorry, I was very ambiguous in my search for answers. I am referring to the cured state. I am using it for construction and I have decided to coat the cured 5 min epoxy with a high quality laminating epoxy to seal/insulate it from solvents, air, etc so that it is preserved-don’t know that it will work but gonna do it that way.</SPAN></div>
<div class=MsoNormal style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN style="COLOR: #1f497d">Mike </SPAN></div>
<div class=MsoNormal style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN style="COLOR: #1f497d"> </SPAN></div>
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<div class=MsoNormal style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: ">From:</SPAN></B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: "> <A href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A> [<A href="mailto:nsrca-discussion-bounces@lists.nsrca.org?">mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B>On Behalf Of </B>Dwayne Brown<br>
<B>Sent:</B> Monday, September 12, 2011 11:28 AM<br>
<B>To:</B> 'General pattern discussion'<br>
<B>Subject:</B> Re: [NSRCA-discussion] 5 min expoxy</SPAN></div>
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<div class=MsoNormal style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"> </div>
<div class=MsoNormal style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: ">Keep it in the freezer until needed and it will outlive all of us on the NSRCA group. Dwayne</SPAN></div>
<div class=MsoNormal style="mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: "> </SPAN></div>
<div class=MsoNormal style="MARGIN-LEFT: 0.5in; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: ">-----Original Message-----<br>
<B>From:</B> <A href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A> [<A href="mailto:nsrca-discussion-bounces@lists.nsrca.org?">mailto:nsrca-discussion-bounces@lists.nsrca.org</A>] <B>On Behalf Of </B>Michael S. Harrison<br>
<B>Sent:</B> Saturday, September 10, 2011 1:59 PM<br>
<B>To:</B> 'General pattern discussion'<br>
<B>Subject:</B> [NSRCA-discussion] 5 min expoxy</SPAN></div>
<div class=MsoNormal style="MARGIN-LEFT: 0.5in; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"> </div>
<div class=MsoNormal style="MARGIN-LEFT: 0.5in; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto">Tech question.</div>
<div class=MsoNormal style="MARGIN-LEFT: 0.5in; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"> </div>
<div class=MsoNormal style="MARGIN-LEFT: 0.5in; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto">What is the lifespan quality of 5 min epoxy. How long does it last? I am using in an electric for construction and I am concerned about degradation over time. How does the heat affect it? I am building to ca models fuse. What is your choice of adhesive in this case?</div>
<div class=MsoNormal style="MARGIN-LEFT: 0.5in; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto">Thanks</div>
<div class=MsoNormal style="MARGIN-LEFT: 0.5in; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto">Mike Harrison</div>
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